Home / 1,392,037.16-1,921,280.69-907,761.55

Finding the Fourth Proportional to 1,392,037.16, 1,921,280.69 and 907,761.55

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Solution

The fourth proportional to 1,392,037.16, 1,921,280.69 and 907,761.55 is: 1,252,886.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,037.16 : 1,921,280.69 = 907,761.55 : x
  2. Step 2: Convert to fraction form
    1,392,037.16/1,921,280.69 = 907,761.55/x
  3. Step 3: Cross multiply
    1,392,037.16x = 1,921,280.69 × 907,761.55
  4. Step 4: Simplify right side
    1,392,037.16x = 1,744,064,737,139.47
  5. Step 5: Solve for x
    x = 1,744,064,737,139.47/1,392,037.16
  6. Step 6: Final answer
    x = 1,252,886.62

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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.