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Finding the Fourth Proportional to 713,360.36, 984,424.60 and 391,073.10

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Solution

The fourth proportional to 713,360.36, 984,424.60 and 391,073.10 is: 539,673.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,360.36 : 984,424.60 = 391,073.10 : x
  2. Step 2: Convert to fraction form
    713,360.36/984,424.60 = 391,073.10/x
  3. Step 3: Cross multiply
    713,360.36x = 984,424.60 × 391,073.10
  4. Step 4: Simplify right side
    713,360.36x = 384,981,980,038.26
  5. Step 5: Solve for x
    x = 384,981,980,038.26/713,360.36
  6. Step 6: Final answer
    x = 539,673.92

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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.