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Finding the Fourth Proportional to 711,653.51, 981,984.84 and 425,112.77

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Solution

The fourth proportional to 711,653.51, 981,984.84 and 425,112.77 is: 586,597.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,653.51 : 981,984.84 = 425,112.77 : x
  2. Step 2: Convert to fraction form
    711,653.51/981,984.84 = 425,112.77/x
  3. Step 3: Cross multiply
    711,653.51x = 981,984.84 × 425,112.77
  4. Step 4: Simplify right side
    711,653.51x = 417,454,290,520.48
  5. Step 5: Solve for x
    x = 417,454,290,520.48/711,653.51
  6. Step 6: Final answer
    x = 586,597.67

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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.