Home / 438,638.20-657,957.30-376,430.20

Finding the Fourth Proportional to 438,638.20, 657,957.30 and 376,430.20

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Solution

The fourth proportional to 438,638.20, 657,957.30 and 376,430.20 is: 564,645.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,638.20 : 657,957.30 = 376,430.20 : x
  2. Step 2: Convert to fraction form
    438,638.20/657,957.30 = 376,430.20/x
  3. Step 3: Cross multiply
    438,638.20x = 657,957.30 × 376,430.20
  4. Step 4: Simplify right side
    438,638.20x = 247,674,998,030.46
  5. Step 5: Solve for x
    x = 247,674,998,030.46/438,638.20
  6. Step 6: Final answer
    x = 564,645.30

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Similar ratio
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1.5x scale

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.