Home / 739,990.74-1,021,190.43-400,459.02

Finding the Fourth Proportional to 739,990.74, 1,021,190.43 and 400,459.02

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Solution

The fourth proportional to 739,990.74, 1,021,190.43 and 400,459.02 is: 552,635.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,990.74 : 1,021,190.43 = 400,459.02 : x
  2. Step 2: Convert to fraction form
    739,990.74/1,021,190.43 = 400,459.02/x
  3. Step 3: Cross multiply
    739,990.74x = 1,021,190.43 × 400,459.02
  4. Step 4: Simplify right side
    739,990.74x = 408,944,918,831.18
  5. Step 5: Solve for x
    x = 408,944,918,831.18/739,990.74
  6. Step 6: Final answer
    x = 552,635.18

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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.