Home / 820,686.90-1,228,077.90-554,966.40

Finding the Fourth Proportional to 820,686.90, 1,228,077.90 and 554,966.40

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Solution

The fourth proportional to 820,686.90, 1,228,077.90 and 554,966.40 is: 830,453.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,686.90 : 1,228,077.90 = 554,966.40 : x
  2. Step 2: Convert to fraction form
    820,686.90/1,228,077.90 = 554,966.40/x
  3. Step 3: Cross multiply
    820,686.90x = 1,228,077.90 × 554,966.40
  4. Step 4: Simplify right side
    820,686.90x = 681,541,971,082.56
  5. Step 5: Solve for x
    x = 681,541,971,082.56/820,686.90
  6. Step 6: Final answer
    x = 830,453.09

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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.