Home / 318,951,212.20-478,426,818.30-315,927,903.40

Finding the Fourth Proportional to 318,951,212.20, 478,426,818.30 and 315,927,903.40

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Solution

The fourth proportional to 318,951,212.20, 478,426,818.30 and 315,927,903.40 is: 473,891,855.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,951,212.20 : 478,426,818.30 = 315,927,903.40 : x
  2. Step 2: Convert to fraction form
    318,951,212.20/478,426,818.30 = 315,927,903.40/x
  3. Step 3: Cross multiply
    318,951,212.20x = 478,426,818.30 × 315,927,903.40
  4. Step 4: Simplify right side
    318,951,212.20x = 151,148,381,635,851,744
  5. Step 5: Solve for x
    x = 151,148,381,635,851,744/318,951,212.20
  6. Step 6: Final answer
    x = 473,891,855.10

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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.