Home / 752,665.61-1,038,669.74-408,502.15

Finding the Fourth Proportional to 752,665.61, 1,038,669.74 and 408,502.15

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Solution

The fourth proportional to 752,665.61, 1,038,669.74 and 408,502.15 is: 563,728.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,665.61 : 1,038,669.74 = 408,502.15 : x
  2. Step 2: Convert to fraction form
    752,665.61/1,038,669.74 = 408,502.15/x
  3. Step 3: Cross multiply
    752,665.61x = 1,038,669.74 × 408,502.15
  4. Step 4: Simplify right side
    752,665.61x = 424,298,821,929.94
  5. Step 5: Solve for x
    x = 424,298,821,929.94/752,665.61
  6. Step 6: Final answer
    x = 563,728.19

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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.