Home / 915,399.20-1,263,290.85-507,475.10

Finding the Fourth Proportional to 915,399.20, 1,263,290.85 and 507,475.10

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Solution

The fourth proportional to 915,399.20, 1,263,290.85 and 507,475.10 is: 700,337.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,399.20 : 1,263,290.85 = 507,475.10 : x
  2. Step 2: Convert to fraction form
    915,399.20/1,263,290.85 = 507,475.10/x
  3. Step 3: Cross multiply
    915,399.20x = 1,263,290.85 × 507,475.10
  4. Step 4: Simplify right side
    915,399.20x = 641,088,653,591.06
  5. Step 5: Solve for x
    x = 641,088,653,591.06/915,399.20
  6. Step 6: Final answer
    x = 700,337.79

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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.