Home / 659,895,618.80-990,410,298.60-291,996,729.20

Finding the Fourth Proportional to 659,895,618.80, 990,410,298.60 and 291,996,729.20

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Solution

The fourth proportional to 659,895,618.80, 990,410,298.60 and 291,996,729.20 is: 438,245,927.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,895,618.80 : 990,410,298.60 = 291,996,729.20 : x
  2. Step 2: Convert to fraction form
    659,895,618.80/990,410,298.60 = 291,996,729.20/x
  3. Step 3: Cross multiply
    659,895,618.80x = 990,410,298.60 × 291,996,729.20
  4. Step 4: Simplify right side
    659,895,618.80x = 289,196,567,757,195,328
  5. Step 5: Solve for x
    x = 289,196,567,757,195,328/659,895,618.80
  6. Step 6: Final answer
    x = 438,245,927.87

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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.