Home / 869,806.55-1,304,185.52-389,947.50

Finding the Fourth Proportional to 869,806.55, 1,304,185.52 and 389,947.50

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Solution

The fourth proportional to 869,806.55, 1,304,185.52 and 389,947.50 is: 584,686.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,806.55 : 1,304,185.52 = 389,947.50 : x
  2. Step 2: Convert to fraction form
    869,806.55/1,304,185.52 = 389,947.50/x
  3. Step 3: Cross multiply
    869,806.55x = 1,304,185.52 × 389,947.50
  4. Step 4: Simplify right side
    869,806.55x = 508,563,884,035.07
  5. Step 5: Solve for x
    x = 508,563,884,035.07/869,806.55
  6. Step 6: Final answer
    x = 584,686.20

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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.