Home / 711,088,119.25-981,294,374.80-393,548,984.75

Finding the Fourth Proportional to 711,088,119.25, 981,294,374.80 and 393,548,984.75

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Solution

The fourth proportional to 711,088,119.25, 981,294,374.80 and 393,548,984.75 is: 543,093,597.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,088,119.25 : 981,294,374.80 = 393,548,984.75 : x
  2. Step 2: Convert to fraction form
    711,088,119.25/981,294,374.80 = 393,548,984.75/x
  3. Step 3: Cross multiply
    711,088,119.25x = 981,294,374.80 × 393,548,984.75
  4. Step 4: Simplify right side
    711,088,119.25x = 386,187,404,943,425,984
  5. Step 5: Solve for x
    x = 386,187,404,943,425,984/711,088,119.25
  6. Step 6: Final answer
    x = 543,093,597.67

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Half scale
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Double scale
Find fourth proportional to 711,088,120.25, 981,294,376.18 and 393,548,985.75
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.