Home / 727,301.40-1,090,578.48-390,625.30

Finding the Fourth Proportional to 727,301.40, 1,090,578.48 and 390,625.30

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Solution

The fourth proportional to 727,301.40, 1,090,578.48 and 390,625.30 is: 585,737.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,301.40 : 1,090,578.48 = 390,625.30 : x
  2. Step 2: Convert to fraction form
    727,301.40/1,090,578.48 = 390,625.30/x
  3. Step 3: Cross multiply
    727,301.40x = 1,090,578.48 × 390,625.30
  4. Step 4: Simplify right side
    727,301.40x = 426,007,545,923.54
  5. Step 5: Solve for x
    x = 426,007,545,923.54/727,301.40
  6. Step 6: Final answer
    x = 585,737.28

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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.