Home / 742,078.72-1,024,068.96-419,781.92

Finding the Fourth Proportional to 742,078.72, 1,024,068.96 and 419,781.92

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Solution

The fourth proportional to 742,078.72, 1,024,068.96 and 419,781.92 is: 579,299.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,078.72 : 1,024,068.96 = 419,781.92 : x
  2. Step 2: Convert to fraction form
    742,078.72/1,024,068.96 = 419,781.92/x
  3. Step 3: Cross multiply
    742,078.72x = 1,024,068.96 × 419,781.92
  4. Step 4: Simplify right side
    742,078.72x = 429,885,634,241.20
  5. Step 5: Solve for x
    x = 429,885,634,241.20/742,078.72
  6. Step 6: Final answer
    x = 579,299.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.