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Finding the Fourth Proportional to 438,440.30, 656,278.05 and 424,616.30

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Solution

The fourth proportional to 438,440.30, 656,278.05 and 424,616.30 is: 635,585.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,440.30 : 656,278.05 = 424,616.30 : x
  2. Step 2: Convert to fraction form
    438,440.30/656,278.05 = 424,616.30/x
  3. Step 3: Cross multiply
    438,440.30x = 656,278.05 × 424,616.30
  4. Step 4: Simplify right side
    438,440.30x = 278,666,357,362.22
  5. Step 5: Solve for x
    x = 278,666,357,362.22/438,440.30
  6. Step 6: Final answer
    x = 635,585.64

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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.