Home / 1,543,445.43-2,315,255.62-478,638.87

Finding the Fourth Proportional to 1,543,445.43, 2,315,255.62 and 478,638.87

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Solution

The fourth proportional to 1,543,445.43, 2,315,255.62 and 478,638.87 is: 717,985.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543,445.43 : 2,315,255.62 = 478,638.87 : x
  2. Step 2: Convert to fraction form
    1,543,445.43/2,315,255.62 = 478,638.87/x
  3. Step 3: Cross multiply
    1,543,445.43x = 2,315,255.62 × 478,638.87
  4. Step 4: Simplify right side
    1,543,445.43x = 1,108,171,333,717.95
  5. Step 5: Solve for x
    x = 1,108,171,333,717.95/1,543,445.43
  6. Step 6: Final answer
    x = 717,985.43

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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.