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Finding the Fourth Proportional to 578,672.90, 868,009.35 and 368,461.70

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Solution

The fourth proportional to 578,672.90, 868,009.35 and 368,461.70 is: 552,692.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,672.90 : 868,009.35 = 368,461.70 : x
  2. Step 2: Convert to fraction form
    578,672.90/868,009.35 = 368,461.70/x
  3. Step 3: Cross multiply
    578,672.90x = 868,009.35 × 368,461.70
  4. Step 4: Simplify right side
    578,672.90x = 319,828,200,716.90
  5. Step 5: Solve for x
    x = 319,828,200,716.90/578,672.90
  6. Step 6: Final answer
    x = 552,692.55

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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.