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Finding the Fourth Proportional to 438,699.58, 658,311.54 and 403,007.74

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Solution

The fourth proportional to 438,699.58, 658,311.54 and 403,007.74 is: 604,752.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,699.58 : 658,311.54 = 403,007.74 : x
  2. Step 2: Convert to fraction form
    438,699.58/658,311.54 = 403,007.74/x
  3. Step 3: Cross multiply
    438,699.58x = 658,311.54 × 403,007.74
  4. Step 4: Simplify right side
    438,699.58x = 265,304,645,951.32
  5. Step 5: Solve for x
    x = 265,304,645,951.32/438,699.58
  6. Step 6: Final answer
    x = 604,752.45

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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.