Home / 668,861,011.90-1,004,047,345.05-396,385,306.30

Finding the Fourth Proportional to 668,861,011.90, 1,004,047,345.05 and 396,385,306.30

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Solution

The fourth proportional to 668,861,011.90, 1,004,047,345.05 and 396,385,306.30 is: 595,025,883.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,861,011.90 : 1,004,047,345.05 = 396,385,306.30 : x
  2. Step 2: Convert to fraction form
    668,861,011.90/1,004,047,345.05 = 396,385,306.30/x
  3. Step 3: Cross multiply
    668,861,011.90x = 1,004,047,345.05 × 396,385,306.30
  4. Step 4: Simplify right side
    668,861,011.90x = 397,989,614,407,346,048
  5. Step 5: Solve for x
    x = 397,989,614,407,346,048/668,861,011.90
  6. Step 6: Final answer
    x = 595,025,883.29

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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.