Home / 812,288.16-1,218,681.36-363,386.88

Finding the Fourth Proportional to 812,288.16, 1,218,681.36 and 363,386.88

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Solution

The fourth proportional to 812,288.16, 1,218,681.36 and 363,386.88 is: 545,191.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,288.16 : 1,218,681.36 = 363,386.88 : x
  2. Step 2: Convert to fraction form
    812,288.16/1,218,681.36 = 363,386.88/x
  3. Step 3: Cross multiply
    812,288.16x = 1,218,681.36 × 363,386.88
  4. Step 4: Simplify right side
    812,288.16x = 442,852,817,124.56
  5. Step 5: Solve for x
    x = 442,852,817,124.56/812,288.16
  6. Step 6: Final answer
    x = 545,191.77

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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.