Home / 872,534.80-1,308,802.20-661,027.60

Finding the Fourth Proportional to 872,534.80, 1,308,802.20 and 661,027.60

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Solution

The fourth proportional to 872,534.80, 1,308,802.20 and 661,027.60 is: 991,541.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,534.80 : 1,308,802.20 = 661,027.60 : x
  2. Step 2: Convert to fraction form
    872,534.80/1,308,802.20 = 661,027.60/x
  3. Step 3: Cross multiply
    872,534.80x = 1,308,802.20 × 661,027.60
  4. Step 4: Simplify right side
    872,534.80x = 865,154,377,140.72
  5. Step 5: Solve for x
    x = 865,154,377,140.72/872,534.80
  6. Step 6: Final answer
    x = 991,541.40

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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.