Home / 398,581,567.80-597,872,351.70-243,613,372.20

Finding the Fourth Proportional to 398,581,567.80, 597,872,351.70 and 243,613,372.20

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Solution

The fourth proportional to 398,581,567.80, 597,872,351.70 and 243,613,372.20 is: 365,420,058.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,581,567.80 : 597,872,351.70 = 243,613,372.20 : x
  2. Step 2: Convert to fraction form
    398,581,567.80/597,872,351.70 = 243,613,372.20/x
  3. Step 3: Cross multiply
    398,581,567.80x = 597,872,351.70 × 243,613,372.20
  4. Step 4: Simplify right side
    398,581,567.80x = 145,649,699,742,781,408
  5. Step 5: Solve for x
    x = 145,649,699,742,781,408/398,581,567.80
  6. Step 6: Final answer
    x = 365,420,058.30

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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.