Home / 727,397.20-1,003,807.78-421,650.77

Finding the Fourth Proportional to 727,397.20, 1,003,807.78 and 421,650.77

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Solution

The fourth proportional to 727,397.20, 1,003,807.78 and 421,650.77 is: 581,877.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,397.20 : 1,003,807.78 = 421,650.77 : x
  2. Step 2: Convert to fraction form
    727,397.20/1,003,807.78 = 421,650.77/x
  3. Step 3: Cross multiply
    727,397.20x = 1,003,807.78 × 421,650.77
  4. Step 4: Simplify right side
    727,397.20x = 423,256,317,295.83
  5. Step 5: Solve for x
    x = 423,256,317,295.83/727,397.20
  6. Step 6: Final answer
    x = 581,877.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.