Home / 1,138,128.80-1,707,193.20-571,258.40

Finding the Fourth Proportional to 1,138,128.80, 1,707,193.20 and 571,258.40

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Solution

The fourth proportional to 1,138,128.80, 1,707,193.20 and 571,258.40 is: 856,887.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,128.80 : 1,707,193.20 = 571,258.40 : x
  2. Step 2: Convert to fraction form
    1,138,128.80/1,707,193.20 = 571,258.40/x
  3. Step 3: Cross multiply
    1,138,128.80x = 1,707,193.20 × 571,258.40
  4. Step 4: Simplify right side
    1,138,128.80x = 975,248,455,922.88
  5. Step 5: Solve for x
    x = 975,248,455,922.88/1,138,128.80
  6. Step 6: Final answer
    x = 856,887.60

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Double scale
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Similar ratio
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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.