Home / 426,403,280.60-640,083,217.80-329,787,306.80

Finding the Fourth Proportional to 426,403,280.60, 640,083,217.80 and 329,787,306.80

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Solution

The fourth proportional to 426,403,280.60, 640,083,217.80 and 329,787,306.80 is: 495,050,882.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,403,280.60 : 640,083,217.80 = 329,787,306.80 : x
  2. Step 2: Convert to fraction form
    426,403,280.60/640,083,217.80 = 329,787,306.80/x
  3. Step 3: Cross multiply
    426,403,280.60x = 640,083,217.80 × 329,787,306.80
  4. Step 4: Simplify right side
    426,403,280.60x = 211,091,320,526,139,808
  5. Step 5: Solve for x
    x = 211,091,320,526,139,808/426,403,280.60
  6. Step 6: Final answer
    x = 495,050,882.89

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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.