Home / 668,340,047.72-1,002,715,321.55-319,031,850.44

Finding the Fourth Proportional to 668,340,047.72, 1,002,715,321.55 and 319,031,850.44

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Solution

The fourth proportional to 668,340,047.72, 1,002,715,321.55 and 319,031,850.44 is: 478,645,751.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,340,047.72 : 1,002,715,321.55 = 319,031,850.44 : x
  2. Step 2: Convert to fraction form
    668,340,047.72/1,002,715,321.55 = 319,031,850.44/x
  3. Step 3: Cross multiply
    668,340,047.72x = 1,002,715,321.55 × 319,031,850.44
  4. Step 4: Simplify right side
    668,340,047.72x = 319,898,124,499,547,712
  5. Step 5: Solve for x
    x = 319,898,124,499,547,712/668,340,047.72
  6. Step 6: Final answer
    x = 478,645,751.65

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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.