Home / 442,541.57-663,309.93-389,130.17

Finding the Fourth Proportional to 442,541.57, 663,309.93 and 389,130.17

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Solution

The fourth proportional to 442,541.57, 663,309.93 and 389,130.17 is: 583,253.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,541.57 : 663,309.93 = 389,130.17 : x
  2. Step 2: Convert to fraction form
    442,541.57/663,309.93 = 389,130.17/x
  3. Step 3: Cross multiply
    442,541.57x = 663,309.93 × 389,130.17
  4. Step 4: Simplify right side
    442,541.57x = 258,113,902,507.04
  5. Step 5: Solve for x
    x = 258,113,902,507.04/442,541.57
  6. Step 6: Final answer
    x = 583,253.47

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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.