Home / 752,712.78-1,038,741.02-408,548.72

Finding the Fourth Proportional to 752,712.78, 1,038,741.02 and 408,548.72

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Solution

The fourth proportional to 752,712.78, 1,038,741.02 and 408,548.72 is: 563,795.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,712.78 : 1,038,741.02 = 408,548.72 : x
  2. Step 2: Convert to fraction form
    752,712.78/1,038,741.02 = 408,548.72/x
  3. Step 3: Cross multiply
    752,712.78x = 1,038,741.02 × 408,548.72
  4. Step 4: Simplify right side
    752,712.78x = 424,376,314,132.49
  5. Step 5: Solve for x
    x = 424,376,314,132.49/752,712.78
  6. Step 6: Final answer
    x = 563,795.81

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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.