Home / 928,781.06-1,281,728.57-515,325.60

Finding the Fourth Proportional to 928,781.06, 1,281,728.57 and 515,325.60

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Solution

The fourth proportional to 928,781.06, 1,281,728.57 and 515,325.60 is: 711,155.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,781.06 : 1,281,728.57 = 515,325.60 : x
  2. Step 2: Convert to fraction form
    928,781.06/1,281,728.57 = 515,325.60/x
  3. Step 3: Cross multiply
    928,781.06x = 1,281,728.57 × 515,325.60
  4. Step 4: Simplify right side
    928,781.06x = 660,507,541,795.76
  5. Step 5: Solve for x
    x = 660,507,541,795.76/928,781.06
  6. Step 6: Final answer
    x = 711,155.27

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Double scale
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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.