Home / 642,921.17-964,582.56-387,033.93

Finding the Fourth Proportional to 642,921.17, 964,582.56 and 387,033.93

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Solution

The fourth proportional to 642,921.17, 964,582.56 and 387,033.93 is: 580,671.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,921.17 : 964,582.56 = 387,033.93 : x
  2. Step 2: Convert to fraction form
    642,921.17/964,582.56 = 387,033.93/x
  3. Step 3: Cross multiply
    642,921.17x = 964,582.56 × 387,033.93
  4. Step 4: Simplify right side
    642,921.17x = 373,326,179,006.26
  5. Step 5: Solve for x
    x = 373,326,179,006.26/642,921.17
  6. Step 6: Final answer
    x = 580,671.78

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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.