Home / 1,213,378.80-1,820,724.30-503,478.60

Finding the Fourth Proportional to 1,213,378.80, 1,820,724.30 and 503,478.60

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Solution

The fourth proportional to 1,213,378.80, 1,820,724.30 and 503,478.60 is: 755,490.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,378.80 : 1,820,724.30 = 503,478.60 : x
  2. Step 2: Convert to fraction form
    1,213,378.80/1,820,724.30 = 503,478.60/x
  3. Step 3: Cross multiply
    1,213,378.80x = 1,820,724.30 × 503,478.60
  4. Step 4: Simplify right side
    1,213,378.80x = 916,695,721,549.98
  5. Step 5: Solve for x
    x = 916,695,721,549.98/1,213,378.80
  6. Step 6: Final answer
    x = 755,490.14

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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.