Home / 571,916.40-857,874.60-439,465.20

Finding the Fourth Proportional to 571,916.40, 857,874.60 and 439,465.20

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Solution

The fourth proportional to 571,916.40, 857,874.60 and 439,465.20 is: 659,197.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,916.40 : 857,874.60 = 439,465.20 : x
  2. Step 2: Convert to fraction form
    571,916.40/857,874.60 = 439,465.20/x
  3. Step 3: Cross multiply
    571,916.40x = 857,874.60 × 439,465.20
  4. Step 4: Simplify right side
    571,916.40x = 377,006,032,663.92
  5. Step 5: Solve for x
    x = 377,006,032,663.92/571,916.40
  6. Step 6: Final answer
    x = 659,197.80

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Half scale
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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.