Home / 1,287,130.80-1,776,248.28-714,182.16

Finding the Fourth Proportional to 1,287,130.80, 1,776,248.28 and 714,182.16

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Solution

The fourth proportional to 1,287,130.80, 1,776,248.28 and 714,182.16 is: 985,575.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,130.80 : 1,776,248.28 = 714,182.16 : x
  2. Step 2: Convert to fraction form
    1,287,130.80/1,776,248.28 = 714,182.16/x
  3. Step 3: Cross multiply
    1,287,130.80x = 1,776,248.28 × 714,182.16
  4. Step 4: Simplify right side
    1,287,130.80x = 1,268,564,833,306.68
  5. Step 5: Solve for x
    x = 1,268,564,833,306.68/1,287,130.80
  6. Step 6: Final answer
    x = 985,575.70

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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.