Home / 820,708.47-1,132,428.38-576,439.60

Finding the Fourth Proportional to 820,708.47, 1,132,428.38 and 576,439.60

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Solution

The fourth proportional to 820,708.47, 1,132,428.38 and 576,439.60 is: 795,381.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,708.47 : 1,132,428.38 = 576,439.60 : x
  2. Step 2: Convert to fraction form
    820,708.47/1,132,428.38 = 576,439.60/x
  3. Step 3: Cross multiply
    820,708.47x = 1,132,428.38 × 576,439.60
  4. Step 4: Simplify right side
    820,708.47x = 652,776,558,863.40
  5. Step 5: Solve for x
    x = 652,776,558,863.40/820,708.47
  6. Step 6: Final answer
    x = 795,381.77

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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.