Home / 431,376,005.60-647,064,008.40-140,242,565.60

Finding the Fourth Proportional to 431,376,005.60, 647,064,008.40 and 140,242,565.60

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Solution

The fourth proportional to 431,376,005.60, 647,064,008.40 and 140,242,565.60 is: 210,363,848.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,376,005.60 : 647,064,008.40 = 140,242,565.60 : x
  2. Step 2: Convert to fraction form
    431,376,005.60/647,064,008.40 = 140,242,565.60/x
  3. Step 3: Cross multiply
    431,376,005.60x = 647,064,008.40 × 140,242,565.60
  4. Step 4: Simplify right side
    431,376,005.60x = 90,745,916,645,435,936
  5. Step 5: Solve for x
    x = 90,745,916,645,435,936/431,376,005.60
  6. Step 6: Final answer
    x = 210,363,848.40

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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.