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Finding the Fourth Proportional to 438,046.20, 657,069.30 and 438,046.20

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Solution

The fourth proportional to 438,046.20, 657,069.30 and 438,046.20 is: 657,069.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,046.20 : 657,069.30 = 438,046.20 : x
  2. Step 2: Convert to fraction form
    438,046.20/657,069.30 = 438,046.20/x
  3. Step 3: Cross multiply
    438,046.20x = 657,069.30 × 438,046.20
  4. Step 4: Simplify right side
    438,046.20x = 287,826,710,001.66
  5. Step 5: Solve for x
    x = 287,826,710,001.66/438,046.20
  6. Step 6: Final answer
    x = 657,069.30

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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.