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Finding the Fourth Proportional to 713,465.88, 984,577.71 and 391,170.66

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Solution

The fourth proportional to 713,465.88, 984,577.71 and 391,170.66 is: 539,812.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,465.88 : 984,577.71 = 391,170.66 : x
  2. Step 2: Convert to fraction form
    713,465.88/984,577.71 = 391,170.66/x
  3. Step 3: Cross multiply
    713,465.88x = 984,577.71 × 391,170.66
  4. Step 4: Simplify right side
    713,465.88x = 385,137,912,641.99
  5. Step 5: Solve for x
    x = 385,137,912,641.99/713,465.88
  6. Step 6: Final answer
    x = 539,812.66

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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.