Home / 806,419.20-1,209,628.80-557,587.20

Finding the Fourth Proportional to 806,419.20, 1,209,628.80 and 557,587.20

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Solution

The fourth proportional to 806,419.20, 1,209,628.80 and 557,587.20 is: 836,380.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,419.20 : 1,209,628.80 = 557,587.20 : x
  2. Step 2: Convert to fraction form
    806,419.20/1,209,628.80 = 557,587.20/x
  3. Step 3: Cross multiply
    806,419.20x = 1,209,628.80 × 557,587.20
  4. Step 4: Simplify right side
    806,419.20x = 674,473,535,631.36
  5. Step 5: Solve for x
    x = 674,473,535,631.36/806,419.20
  6. Step 6: Final answer
    x = 836,380.80

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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.