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Finding the Fourth Proportional to 577,871.80, 866,807.70 and 368,438.20

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Solution

The fourth proportional to 577,871.80, 866,807.70 and 368,438.20 is: 552,657.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,871.80 : 866,807.70 = 368,438.20 : x
  2. Step 2: Convert to fraction form
    577,871.80/866,807.70 = 368,438.20/x
  3. Step 3: Cross multiply
    577,871.80x = 866,807.70 × 368,438.20
  4. Step 4: Simplify right side
    577,871.80x = 319,365,068,734.14
  5. Step 5: Solve for x
    x = 319,365,068,734.14/577,871.80
  6. Step 6: Final answer
    x = 552,657.30

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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.