Home / 711,139.74-981,619.95-409,453.98

Finding the Fourth Proportional to 711,139.74, 981,619.95 and 409,453.98

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Solution

The fourth proportional to 711,139.74, 981,619.95 and 409,453.98 is: 565,188.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,139.74 : 981,619.95 = 409,453.98 : x
  2. Step 2: Convert to fraction form
    711,139.74/981,619.95 = 409,453.98/x
  3. Step 3: Cross multiply
    711,139.74x = 981,619.95 × 409,453.98
  4. Step 4: Simplify right side
    711,139.74x = 401,928,195,374.90
  5. Step 5: Solve for x
    x = 401,928,195,374.90/711,139.74
  6. Step 6: Final answer
    x = 565,188.77

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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.