Home / 688,047.70-1,032,071.55-520,086.10

Finding the Fourth Proportional to 688,047.70, 1,032,071.55 and 520,086.10

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Solution

The fourth proportional to 688,047.70, 1,032,071.55 and 520,086.10 is: 780,129.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,047.70 : 1,032,071.55 = 520,086.10 : x
  2. Step 2: Convert to fraction form
    688,047.70/1,032,071.55 = 520,086.10/x
  3. Step 3: Cross multiply
    688,047.70x = 1,032,071.55 × 520,086.10
  4. Step 4: Simplify right side
    688,047.70x = 536,766,067,360.46
  5. Step 5: Solve for x
    x = 536,766,067,360.46/688,047.70
  6. Step 6: Final answer
    x = 780,129.15

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Similar ratio
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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.