Home / 861,056.64-1,188,151.20-479,056.32

Finding the Fourth Proportional to 861,056.64, 1,188,151.20 and 479,056.32

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Solution

The fourth proportional to 861,056.64, 1,188,151.20 and 479,056.32 is: 661,038.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,056.64 : 1,188,151.20 = 479,056.32 : x
  2. Step 2: Convert to fraction form
    861,056.64/1,188,151.20 = 479,056.32/x
  3. Step 3: Cross multiply
    861,056.64x = 1,188,151.20 × 479,056.32
  4. Step 4: Simplify right side
    861,056.64x = 569,191,341,475.58
  5. Step 5: Solve for x
    x = 569,191,341,475.58/861,056.64
  6. Step 6: Final answer
    x = 661,038.21

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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.