Home / 1,128,549.28-1,557,398.02-645,125.22

Finding the Fourth Proportional to 1,128,549.28, 1,557,398.02 and 645,125.22

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Solution

The fourth proportional to 1,128,549.28, 1,557,398.02 and 645,125.22 is: 890,272.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,549.28 : 1,557,398.02 = 645,125.22 : x
  2. Step 2: Convert to fraction form
    1,128,549.28/1,557,398.02 = 645,125.22/x
  3. Step 3: Cross multiply
    1,128,549.28x = 1,557,398.02 × 645,125.22
  4. Step 4: Simplify right side
    1,128,549.28x = 1,004,716,740,280.06
  5. Step 5: Solve for x
    x = 1,004,716,740,280.06/1,128,549.28
  6. Step 6: Final answer
    x = 890,272.81

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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.