Home / 812,112.28-1,218,417.52-363,210.72

Finding the Fourth Proportional to 812,112.28, 1,218,417.52 and 363,210.72

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Solution

The fourth proportional to 812,112.28, 1,218,417.52 and 363,210.72 is: 544,927.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,112.28 : 1,218,417.52 = 363,210.72 : x
  2. Step 2: Convert to fraction form
    812,112.28/1,218,417.52 = 363,210.72/x
  3. Step 3: Cross multiply
    812,112.28x = 1,218,417.52 × 363,210.72
  4. Step 4: Simplify right side
    812,112.28x = 442,542,304,699.81
  5. Step 5: Solve for x
    x = 442,542,304,699.81/812,112.28
  6. Step 6: Final answer
    x = 544,927.49

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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.