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Finding the Fourth Proportional to 713,454.36, 984,555.78 and 391,167.24

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Solution

The fourth proportional to 713,454.36, 984,555.78 and 391,167.24 is: 539,804.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,454.36 : 984,555.78 = 391,167.24 : x
  2. Step 2: Convert to fraction form
    713,454.36/984,555.78 = 391,167.24/x
  3. Step 3: Cross multiply
    713,454.36x = 984,555.78 × 391,167.24
  4. Step 4: Simplify right side
    713,454.36x = 385,125,967,088.65
  5. Step 5: Solve for x
    x = 385,125,967,088.65/713,454.36
  6. Step 6: Final answer
    x = 539,804.63

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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.