Home / 753,812.78-1,040,271.77-409,655.53

Finding the Fourth Proportional to 753,812.78, 1,040,271.77 and 409,655.53

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Solution

The fourth proportional to 753,812.78, 1,040,271.77 and 409,655.53 is: 565,330.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,812.78 : 1,040,271.77 = 409,655.53 : x
  2. Step 2: Convert to fraction form
    753,812.78/1,040,271.77 = 409,655.53/x
  3. Step 3: Cross multiply
    753,812.78x = 1,040,271.77 × 409,655.53
  4. Step 4: Simplify right side
    753,812.78x = 426,153,076,033.75
  5. Step 5: Solve for x
    x = 426,153,076,033.75/753,812.78
  6. Step 6: Final answer
    x = 565,330.13

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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.