Home / 819,111.20-1,228,666.80-346,330.40

Finding the Fourth Proportional to 819,111.20, 1,228,666.80 and 346,330.40

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Solution

The fourth proportional to 819,111.20, 1,228,666.80 and 346,330.40 is: 519,495.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,111.20 : 1,228,666.80 = 346,330.40 : x
  2. Step 2: Convert to fraction form
    819,111.20/1,228,666.80 = 346,330.40/x
  3. Step 3: Cross multiply
    819,111.20x = 1,228,666.80 × 346,330.40
  4. Step 4: Simplify right side
    819,111.20x = 425,524,664,310.72
  5. Step 5: Solve for x
    x = 425,524,664,310.72/819,111.20
  6. Step 6: Final answer
    x = 519,495.60

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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.