Home / 727,407.38-1,003,822.49-421,661.10

Finding the Fourth Proportional to 727,407.38, 1,003,822.49 and 421,661.10

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Solution

The fourth proportional to 727,407.38, 1,003,822.49 and 421,661.10 is: 581,892.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,407.38 : 1,003,822.49 = 421,661.10 : x
  2. Step 2: Convert to fraction form
    727,407.38/1,003,822.49 = 421,661.10/x
  3. Step 3: Cross multiply
    727,407.38x = 1,003,822.49 × 421,661.10
  4. Step 4: Simplify right side
    727,407.38x = 423,272,895,739.39
  5. Step 5: Solve for x
    x = 423,272,895,739.39/727,407.38
  6. Step 6: Final answer
    x = 581,892.50

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1.5x scale

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.