Home / 664,444.80-996,667.20-571,132.80

Finding the Fourth Proportional to 664,444.80, 996,667.20 and 571,132.80

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Solution

The fourth proportional to 664,444.80, 996,667.20 and 571,132.80 is: 856,699.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,444.80 : 996,667.20 = 571,132.80 : x
  2. Step 2: Convert to fraction form
    664,444.80/996,667.20 = 571,132.80/x
  3. Step 3: Cross multiply
    664,444.80x = 996,667.20 × 571,132.80
  4. Step 4: Simplify right side
    664,444.80x = 569,229,328,604.16
  5. Step 5: Solve for x
    x = 569,229,328,604.16/664,444.80
  6. Step 6: Final answer
    x = 856,699.20

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Half scale
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Double scale
Find fourth proportional to 664,445.80, 996,668.70 and 571,133.80
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.