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Finding the Fourth Proportional to 713,424.54, 984,499.74 and 391,127.58

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Solution

The fourth proportional to 713,424.54, 984,499.74 and 391,127.58 is: 539,741.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,424.54 : 984,499.74 = 391,127.58 : x
  2. Step 2: Convert to fraction form
    713,424.54/984,499.74 = 391,127.58/x
  3. Step 3: Cross multiply
    713,424.54x = 984,499.74 × 391,127.58
  4. Step 4: Simplify right side
    713,424.54x = 385,065,000,816.83
  5. Step 5: Solve for x
    x = 385,065,000,816.83/713,424.54
  6. Step 6: Final answer
    x = 539,741.74

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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.