Home / 578,078.10-867,117.15-550,521.90

Finding the Fourth Proportional to 578,078.10, 867,117.15 and 550,521.90

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Solution

The fourth proportional to 578,078.10, 867,117.15 and 550,521.90 is: 825,782.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,078.10 : 867,117.15 = 550,521.90 : x
  2. Step 2: Convert to fraction form
    578,078.10/867,117.15 = 550,521.90/x
  3. Step 3: Cross multiply
    578,078.10x = 867,117.15 × 550,521.90
  4. Step 4: Simplify right side
    578,078.10x = 477,366,980,940.59
  5. Step 5: Solve for x
    x = 477,366,980,940.59/578,078.10
  6. Step 6: Final answer
    x = 825,782.85

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Double scale
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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.