Home / 717,831.80-990,652.10-395,541.84

Finding the Fourth Proportional to 717,831.80, 990,652.10 and 395,541.84

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Solution

The fourth proportional to 717,831.80, 990,652.10 and 395,541.84 is: 545,872.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,831.80 : 990,652.10 = 395,541.84 : x
  2. Step 2: Convert to fraction form
    717,831.80/990,652.10 = 395,541.84/x
  3. Step 3: Cross multiply
    717,831.80x = 990,652.10 × 395,541.84
  4. Step 4: Simplify right side
    717,831.80x = 391,844,354,433.86
  5. Step 5: Solve for x
    x = 391,844,354,433.86/717,831.80
  6. Step 6: Final answer
    x = 545,872.10

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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.