Home / 820,536.20-1,228,730.70-654,648.20

Finding the Fourth Proportional to 820,536.20, 1,228,730.70 and 654,648.20

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Solution

The fourth proportional to 820,536.20, 1,228,730.70 and 654,648.20 is: 980,317.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,536.20 : 1,228,730.70 = 654,648.20 : x
  2. Step 2: Convert to fraction form
    820,536.20/1,228,730.70 = 654,648.20/x
  3. Step 3: Cross multiply
    820,536.20x = 1,228,730.70 × 654,648.20
  4. Step 4: Simplify right side
    820,536.20x = 804,386,341,039.74
  5. Step 5: Solve for x
    x = 804,386,341,039.74/820,536.20
  6. Step 6: Final answer
    x = 980,317.92

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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.