Home / 638,421.51-955,942.80-385,363.74

Finding the Fourth Proportional to 638,421.51, 955,942.80 and 385,363.74

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Solution

The fourth proportional to 638,421.51, 955,942.80 and 385,363.74 is: 577,025.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,421.51 : 955,942.80 = 385,363.74 : x
  2. Step 2: Convert to fraction form
    638,421.51/955,942.80 = 385,363.74/x
  3. Step 3: Cross multiply
    638,421.51x = 955,942.80 × 385,363.74
  4. Step 4: Simplify right side
    638,421.51x = 368,385,694,773.74
  5. Step 5: Solve for x
    x = 368,385,694,773.74/638,421.51
  6. Step 6: Final answer
    x = 577,025.82

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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.