Home / 426,488,345.20-639,732,517.80-349,004,247.40

Finding the Fourth Proportional to 426,488,345.20, 639,732,517.80 and 349,004,247.40

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Solution

The fourth proportional to 426,488,345.20, 639,732,517.80 and 349,004,247.40 is: 523,506,371.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,488,345.20 : 639,732,517.80 = 349,004,247.40 : x
  2. Step 2: Convert to fraction form
    426,488,345.20/639,732,517.80 = 349,004,247.40/x
  3. Step 3: Cross multiply
    426,488,345.20x = 639,732,517.80 × 349,004,247.40
  4. Step 4: Simplify right side
    426,488,345.20x = 223,269,365,912,096,064
  5. Step 5: Solve for x
    x = 223,269,365,912,096,064/426,488,345.20
  6. Step 6: Final answer
    x = 523,506,371.10

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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.