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Finding the Fourth Proportional to 914,420.40, 1,371,410 and 381,652.62

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Solution

The fourth proportional to 914,420.40, 1,371,410 and 381,652.62 is: 572,386.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    914,420.40 : 1,371,410 = 381,652.62 : x
  2. Step 2: Convert to fraction form
    914,420.40/1,371,410 = 381,652.62/x
  3. Step 3: Cross multiply
    914,420.40x = 1,371,410 × 381,652.62
  4. Step 4: Simplify right side
    914,420.40x = 523,402,219,594.20
  5. Step 5: Solve for x
    x = 523,402,219,594.20/914,420.40
  6. Step 6: Final answer
    x = 572,386.86

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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.