Home / 656,471.20-985,095.60-478,530.40

Finding the Fourth Proportional to 656,471.20, 985,095.60 and 478,530.40

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Solution

The fourth proportional to 656,471.20, 985,095.60 and 478,530.40 is: 718,079.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,471.20 : 985,095.60 = 478,530.40 : x
  2. Step 2: Convert to fraction form
    656,471.20/985,095.60 = 478,530.40/x
  3. Step 3: Cross multiply
    656,471.20x = 985,095.60 × 478,530.40
  4. Step 4: Simplify right side
    656,471.20x = 471,398,191,506.24
  5. Step 5: Solve for x
    x = 471,398,191,506.24/656,471.20
  6. Step 6: Final answer
    x = 718,079.01

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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.