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Finding the Fourth Proportional to 713,617.95, 984,806.27 and 391,308.82

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Solution

The fourth proportional to 713,617.95, 984,806.27 and 391,308.82 is: 540,013.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,617.95 : 984,806.27 = 391,308.82 : x
  2. Step 2: Convert to fraction form
    713,617.95/984,806.27 = 391,308.82/x
  3. Step 3: Cross multiply
    713,617.95x = 984,806.27 × 391,308.82
  4. Step 4: Simplify right side
    713,617.95x = 385,363,379,442.30
  5. Step 5: Solve for x
    x = 385,363,379,442.30/713,617.95
  6. Step 6: Final answer
    x = 540,013.57

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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.