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Finding the Fourth Proportional to 713,507.04, 984,632.34 and 391,216.59

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Solution

The fourth proportional to 713,507.04, 984,632.34 and 391,216.59 is: 539,874.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,507.04 : 984,632.34 = 391,216.59 : x
  2. Step 2: Convert to fraction form
    713,507.04/984,632.34 = 391,216.59/x
  3. Step 3: Cross multiply
    713,507.04x = 984,632.34 × 391,216.59
  4. Step 4: Simplify right side
    713,507.04x = 385,204,506,458.52
  5. Step 5: Solve for x
    x = 385,204,506,458.52/713,507.04
  6. Step 6: Final answer
    x = 539,874.85

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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.