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Finding the Fourth Proportional to 578,625.30, 867,808.35 and 380,337.30

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Solution

The fourth proportional to 578,625.30, 867,808.35 and 380,337.30 is: 570,420.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,625.30 : 867,808.35 = 380,337.30 : x
  2. Step 2: Convert to fraction form
    578,625.30/867,808.35 = 380,337.30/x
  3. Step 3: Cross multiply
    578,625.30x = 867,808.35 × 380,337.30
  4. Step 4: Simplify right side
    578,625.30x = 330,059,884,756.46
  5. Step 5: Solve for x
    x = 330,059,884,756.46/578,625.30
  6. Step 6: Final answer
    x = 570,420.76

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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.