Home / 645,038,901.96-890,229,255.63-366,622,276.47

Finding the Fourth Proportional to 645,038,901.96, 890,229,255.63 and 366,622,276.47

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Solution

The fourth proportional to 645,038,901.96, 890,229,255.63 and 366,622,276.47 is: 505,981,693.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,038,901.96 : 890,229,255.63 = 366,622,276.47 : x
  2. Step 2: Convert to fraction form
    645,038,901.96/890,229,255.63 = 366,622,276.47/x
  3. Step 3: Cross multiply
    645,038,901.96x = 890,229,255.63 × 366,622,276.47
  4. Step 4: Simplify right side
    645,038,901.96x = 326,377,876,279,264,192
  5. Step 5: Solve for x
    x = 326,377,876,279,264,192/645,038,901.96
  6. Step 6: Final answer
    x = 505,981,693.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.