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Finding the Fourth Proportional to 474,718.08, 712,569.20 and 318,041.40

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Solution

The fourth proportional to 474,718.08, 712,569.20 and 318,041.40 is: 477,391.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,718.08 : 712,569.20 = 318,041.40 : x
  2. Step 2: Convert to fraction form
    474,718.08/712,569.20 = 318,041.40/x
  3. Step 3: Cross multiply
    474,718.08x = 712,569.20 × 318,041.40
  4. Step 4: Simplify right side
    474,718.08x = 226,626,505,964.88
  5. Step 5: Solve for x
    x = 226,626,505,964.88/474,718.08
  6. Step 6: Final answer
    x = 477,391.77

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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.