Home / 819,007.20-1,228,510.80-286,351.20

Finding the Fourth Proportional to 819,007.20, 1,228,510.80 and 286,351.20

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Solution

The fourth proportional to 819,007.20, 1,228,510.80 and 286,351.20 is: 429,526.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,007.20 : 1,228,510.80 = 286,351.20 : x
  2. Step 2: Convert to fraction form
    819,007.20/1,228,510.80 = 286,351.20/x
  3. Step 3: Cross multiply
    819,007.20x = 1,228,510.80 × 286,351.20
  4. Step 4: Simplify right side
    819,007.20x = 351,785,541,792.96
  5. Step 5: Solve for x
    x = 351,785,541,792.96/819,007.20
  6. Step 6: Final answer
    x = 429,526.80

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Similar ratio
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1.5x scale

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.