Home / 481,006,036.80-721,509,055.20-426,480,190.20

Finding the Fourth Proportional to 481,006,036.80, 721,509,055.20 and 426,480,190.20

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Solution

The fourth proportional to 481,006,036.80, 721,509,055.20 and 426,480,190.20 is: 639,720,285.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,006,036.80 : 721,509,055.20 = 426,480,190.20 : x
  2. Step 2: Convert to fraction form
    481,006,036.80/721,509,055.20 = 426,480,190.20/x
  3. Step 3: Cross multiply
    481,006,036.80x = 721,509,055.20 × 426,480,190.20
  4. Step 4: Simplify right side
    481,006,036.80x = 307,709,319,092,718,336
  5. Step 5: Solve for x
    x = 307,709,319,092,718,336/481,006,036.80
  6. Step 6: Final answer
    x = 639,720,285.30

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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.