Home / 858,411.60-1,287,617.40-503,595.60

Finding the Fourth Proportional to 858,411.60, 1,287,617.40 and 503,595.60

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Solution

The fourth proportional to 858,411.60, 1,287,617.40 and 503,595.60 is: 755,393.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,411.60 : 1,287,617.40 = 503,595.60 : x
  2. Step 2: Convert to fraction form
    858,411.60/1,287,617.40 = 503,595.60/x
  3. Step 3: Cross multiply
    858,411.60x = 1,287,617.40 × 503,595.60
  4. Step 4: Simplify right side
    858,411.60x = 648,438,457,123.44
  5. Step 5: Solve for x
    x = 648,438,457,123.44/858,411.60
  6. Step 6: Final answer
    x = 755,393.40

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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.