Home / 478,381,105.20-717,571,657.80-260,136,001.20

Finding the Fourth Proportional to 478,381,105.20, 717,571,657.80 and 260,136,001.20

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Solution

The fourth proportional to 478,381,105.20, 717,571,657.80 and 260,136,001.20 is: 390,204,001.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,381,105.20 : 717,571,657.80 = 260,136,001.20 : x
  2. Step 2: Convert to fraction form
    478,381,105.20/717,571,657.80 = 260,136,001.20/x
  3. Step 3: Cross multiply
    478,381,105.20x = 717,571,657.80 × 260,136,001.20
  4. Step 4: Simplify right side
    478,381,105.20x = 186,666,221,634,546,784
  5. Step 5: Solve for x
    x = 186,666,221,634,546,784/478,381,105.20
  6. Step 6: Final answer
    x = 390,204,001.80

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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.