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Finding the Fourth Proportional to 525,087.90, 787,631.85 and 487,763.10

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Solution

The fourth proportional to 525,087.90, 787,631.85 and 487,763.10 is: 731,644.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,087.90 : 787,631.85 = 487,763.10 : x
  2. Step 2: Convert to fraction form
    525,087.90/787,631.85 = 487,763.10/x
  3. Step 3: Cross multiply
    525,087.90x = 787,631.85 × 487,763.10
  4. Step 4: Simplify right side
    525,087.90x = 384,177,752,814.74
  5. Step 5: Solve for x
    x = 384,177,752,814.74/525,087.90
  6. Step 6: Final answer
    x = 731,644.65

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.