Home / 543,831.20-815,746.80-354,874.40

Finding the Fourth Proportional to 543,831.20, 815,746.80 and 354,874.40

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Solution

The fourth proportional to 543,831.20, 815,746.80 and 354,874.40 is: 532,311.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,831.20 : 815,746.80 = 354,874.40 : x
  2. Step 2: Convert to fraction form
    543,831.20/815,746.80 = 354,874.40/x
  3. Step 3: Cross multiply
    543,831.20x = 815,746.80 × 354,874.40
  4. Step 4: Simplify right side
    543,831.20x = 289,487,656,201.92
  5. Step 5: Solve for x
    x = 289,487,656,201.92/543,831.20
  6. Step 6: Final answer
    x = 532,311.60

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.