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Finding the Fourth Proportional to 550,577.40, 825,866.10 and 391,145.10

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Solution

The fourth proportional to 550,577.40, 825,866.10 and 391,145.10 is: 586,717.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,577.40 : 825,866.10 = 391,145.10 : x
  2. Step 2: Convert to fraction form
    550,577.40/825,866.10 = 391,145.10/x
  3. Step 3: Cross multiply
    550,577.40x = 825,866.10 × 391,145.10
  4. Step 4: Simplify right side
    550,577.40x = 323,033,478,271.11
  5. Step 5: Solve for x
    x = 323,033,478,271.11/550,577.40
  6. Step 6: Final answer
    x = 586,717.65

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Similar ratio
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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.