Home / 820,062.60-1,229,510.70-314,428.20

Finding the Fourth Proportional to 820,062.60, 1,229,510.70 and 314,428.20

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Solution

The fourth proportional to 820,062.60, 1,229,510.70 and 314,428.20 is: 471,418.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,062.60 : 1,229,510.70 = 314,428.20 : x
  2. Step 2: Convert to fraction form
    820,062.60/1,229,510.70 = 314,428.20/x
  3. Step 3: Cross multiply
    820,062.60x = 1,229,510.70 × 314,428.20
  4. Step 4: Simplify right side
    820,062.60x = 386,592,836,281.74
  5. Step 5: Solve for x
    x = 386,592,836,281.74/820,062.60
  6. Step 6: Final answer
    x = 471,418.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.