Home / 612,905.10-917,608.05-542,921.10

Finding the Fourth Proportional to 612,905.10, 917,608.05 and 542,921.10

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Solution

The fourth proportional to 612,905.10, 917,608.05 and 542,921.10 is: 812,831.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,905.10 : 917,608.05 = 542,921.10 : x
  2. Step 2: Convert to fraction form
    612,905.10/917,608.05 = 542,921.10/x
  3. Step 3: Cross multiply
    612,905.10x = 917,608.05 × 542,921.10
  4. Step 4: Simplify right side
    612,905.10x = 498,188,771,874.86
  5. Step 5: Solve for x
    x = 498,188,771,874.86/612,905.10
  6. Step 6: Final answer
    x = 812,831.83

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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.