Home / 727,386.36-1,003,792.82-421,639.92

Finding the Fourth Proportional to 727,386.36, 1,003,792.82 and 421,639.92

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Solution

The fourth proportional to 727,386.36, 1,003,792.82 and 421,639.92 is: 581,862.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,386.36 : 1,003,792.82 = 421,639.92 : x
  2. Step 2: Convert to fraction form
    727,386.36/1,003,792.82 = 421,639.92/x
  3. Step 3: Cross multiply
    727,386.36x = 1,003,792.82 × 421,639.92
  4. Step 4: Simplify right side
    727,386.36x = 423,239,122,213.18
  5. Step 5: Solve for x
    x = 423,239,122,213.18/727,386.36
  6. Step 6: Final answer
    x = 581,862.88

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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.