Home / 1,145,438.47-1,580,708.78-636,140.84

Finding the Fourth Proportional to 1,145,438.47, 1,580,708.78 and 636,140.84

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Solution

The fourth proportional to 1,145,438.47, 1,580,708.78 and 636,140.84 is: 877,876.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145,438.47 : 1,580,708.78 = 636,140.84 : x
  2. Step 2: Convert to fraction form
    1,145,438.47/1,580,708.78 = 636,140.84/x
  3. Step 3: Cross multiply
    1,145,438.47x = 1,580,708.78 × 636,140.84
  4. Step 4: Simplify right side
    1,145,438.47x = 1,005,553,411,104.58
  5. Step 5: Solve for x
    x = 1,005,553,411,104.58/1,145,438.47
  6. Step 6: Final answer
    x = 877,876.41

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Double scale
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1.5x scale

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.