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Finding the Fourth Proportional to 978,996,357.81, 1,468,063,610.19 and 518,826,713.49

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Solution

The fourth proportional to 978,996,357.81, 1,468,063,610.19 and 518,826,713.49 is: 778,011,697.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,996,357.81 : 1,468,063,610.19 = 518,826,713.49 : x
  2. Step 2: Convert to fraction form
    978,996,357.81/1,468,063,610.19 = 518,826,713.49/x
  3. Step 3: Cross multiply
    978,996,357.81x = 1,468,063,610.19 × 518,826,713.49
  4. Step 4: Simplify right side
    978,996,357.81x = 761,670,618,069,142,272
  5. Step 5: Solve for x
    x = 761,670,618,069,142,272/978,996,357.81
  6. Step 6: Final answer
    x = 778,011,697.38

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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.