Home / 478,667,721.60-718,355,476.80-191,659,363.20

Finding the Fourth Proportional to 478,667,721.60, 718,355,476.80 and 191,659,363.20

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Solution

The fourth proportional to 478,667,721.60, 718,355,476.80 and 191,659,363.20 is: 287,630,744.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,667,721.60 : 718,355,476.80 = 191,659,363.20 : x
  2. Step 2: Convert to fraction form
    478,667,721.60/718,355,476.80 = 191,659,363.20/x
  3. Step 3: Cross multiply
    478,667,721.60x = 718,355,476.80 × 191,659,363.20
  4. Step 4: Simplify right side
    478,667,721.60x = 137,679,553,234,720,352
  5. Step 5: Solve for x
    x = 137,679,553,234,720,352/478,667,721.60
  6. Step 6: Final answer
    x = 287,630,744.71

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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.