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Finding the Fourth Proportional to 675,285.12, 932,180.40 and 420,762.12

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Solution

The fourth proportional to 675,285.12, 932,180.40 and 420,762.12 is: 580,830.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,285.12 : 932,180.40 = 420,762.12 : x
  2. Step 2: Convert to fraction form
    675,285.12/932,180.40 = 420,762.12/x
  3. Step 3: Cross multiply
    675,285.12x = 932,180.40 × 420,762.12
  4. Step 4: Simplify right side
    675,285.12x = 392,226,201,326.45
  5. Step 5: Solve for x
    x = 392,226,201,326.45/675,285.12
  6. Step 6: Final answer
    x = 580,830.51

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1.5x scale

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.