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Finding the Fourth Proportional to 438,701.58, 658,314.54 and 403,009.74

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Solution

The fourth proportional to 438,701.58, 658,314.54 and 403,009.74 is: 604,755.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,701.58 : 658,314.54 = 403,009.74 : x
  2. Step 2: Convert to fraction form
    438,701.58/658,314.54 = 403,009.74/x
  3. Step 3: Cross multiply
    438,701.58x = 658,314.54 × 403,009.74
  4. Step 4: Simplify right side
    438,701.58x = 265,307,171,603.62
  5. Step 5: Solve for x
    x = 265,307,171,603.62/438,701.58
  6. Step 6: Final answer
    x = 604,755.45

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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.