Home / 438,001.40-657,002.10-288,410.60

Finding the Fourth Proportional to 438,001.40, 657,002.10 and 288,410.60

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Solution

The fourth proportional to 438,001.40, 657,002.10 and 288,410.60 is: 432,615.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,001.40 : 657,002.10 = 288,410.60 : x
  2. Step 2: Convert to fraction form
    438,001.40/657,002.10 = 288,410.60/x
  3. Step 3: Cross multiply
    438,001.40x = 657,002.10 × 288,410.60
  4. Step 4: Simplify right side
    438,001.40x = 189,486,369,862.26
  5. Step 5: Solve for x
    x = 189,486,369,862.26/438,001.40
  6. Step 6: Final answer
    x = 432,615.90

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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.