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Finding the Fourth Proportional to 658,870.90, 907,356.07 and 617,814.92

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Solution

The fourth proportional to 658,870.90, 907,356.07 and 617,814.92 is: 850,816.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,870.90 : 907,356.07 = 617,814.92 : x
  2. Step 2: Convert to fraction form
    658,870.90/907,356.07 = 617,814.92/x
  3. Step 3: Cross multiply
    658,870.90x = 907,356.07 × 617,814.92
  4. Step 4: Simplify right side
    658,870.90x = 560,578,120,839.22
  5. Step 5: Solve for x
    x = 560,578,120,839.22/658,870.90
  6. Step 6: Final answer
    x = 850,816.33

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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.