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Finding the Fourth Proportional to 478,987,410.04, 718,478,100.16 and 257,762,956.88

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Solution

The fourth proportional to 478,987,410.04, 718,478,100.16 and 257,762,956.88 is: 386,642,812.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,987,410.04 : 718,478,100.16 = 257,762,956.88 : x
  2. Step 2: Convert to fraction form
    478,987,410.04/718,478,100.16 = 257,762,956.88/x
  3. Step 3: Cross multiply
    478,987,410.04x = 718,478,100.16 × 257,762,956.88
  4. Step 4: Simplify right side
    478,987,410.04x = 185,197,039,550,766,400
  5. Step 5: Solve for x
    x = 185,197,039,550,766,400/478,987,410.04
  6. Step 6: Final answer
    x = 386,642,812.88

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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.