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Finding the Fourth Proportional to 578,467.80, 867,701.70 and 519,564.60

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Solution

The fourth proportional to 578,467.80, 867,701.70 and 519,564.60 is: 779,346.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,467.80 : 867,701.70 = 519,564.60 : x
  2. Step 2: Convert to fraction form
    578,467.80/867,701.70 = 519,564.60/x
  3. Step 3: Cross multiply
    578,467.80x = 867,701.70 × 519,564.60
  4. Step 4: Simplify right side
    578,467.80x = 450,827,086,679.82
  5. Step 5: Solve for x
    x = 450,827,086,679.82/578,467.80
  6. Step 6: Final answer
    x = 779,346.90

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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.