Home / 426,046,291.20-639,069,436.80-280,927,468.80

Finding the Fourth Proportional to 426,046,291.20, 639,069,436.80 and 280,927,468.80

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Solution

The fourth proportional to 426,046,291.20, 639,069,436.80 and 280,927,468.80 is: 421,391,203.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,046,291.20 : 639,069,436.80 = 280,927,468.80 : x
  2. Step 2: Convert to fraction form
    426,046,291.20/639,069,436.80 = 280,927,468.80/x
  3. Step 3: Cross multiply
    426,046,291.20x = 639,069,436.80 × 280,927,468.80
  4. Step 4: Simplify right side
    426,046,291.20x = 179,532,159,267,665,568
  5. Step 5: Solve for x
    x = 179,532,159,267,665,568/426,046,291.20
  6. Step 6: Final answer
    x = 421,391,203.20

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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.