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Finding the Fourth Proportional to 586,427.90, 878,605.05 and 520,072.70

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Solution

The fourth proportional to 586,427.90, 878,605.05 and 520,072.70 is: 779,189.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,427.90 : 878,605.05 = 520,072.70 : x
  2. Step 2: Convert to fraction form
    586,427.90/878,605.05 = 520,072.70/x
  3. Step 3: Cross multiply
    586,427.90x = 878,605.05 × 520,072.70
  4. Step 4: Simplify right side
    586,427.90x = 456,938,500,587.14
  5. Step 5: Solve for x
    x = 456,938,500,587.14/586,427.90
  6. Step 6: Final answer
    x = 779,189.57

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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.