Home / 820,105.40-1,230,158.10-503,535.80

Finding the Fourth Proportional to 820,105.40, 1,230,158.10 and 503,535.80

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Solution

The fourth proportional to 820,105.40, 1,230,158.10 and 503,535.80 is: 755,303.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,105.40 : 1,230,158.10 = 503,535.80 : x
  2. Step 2: Convert to fraction form
    820,105.40/1,230,158.10 = 503,535.80/x
  3. Step 3: Cross multiply
    820,105.40x = 1,230,158.10 × 503,535.80
  4. Step 4: Simplify right side
    820,105.40x = 619,428,643,009.98
  5. Step 5: Solve for x
    x = 619,428,643,009.98/820,105.40
  6. Step 6: Final answer
    x = 755,303.70

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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.