Home / 389,810.90-584,667.08-123,574.03

Finding the Fourth Proportional to 389,810.90, 584,667.08 and 123,574.03

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Solution

The fourth proportional to 389,810.90, 584,667.08 and 123,574.03 is: 185,345.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,810.90 : 584,667.08 = 123,574.03 : x
  2. Step 2: Convert to fraction form
    389,810.90/584,667.08 = 123,574.03/x
  3. Step 3: Cross multiply
    389,810.90x = 584,667.08 × 123,574.03
  4. Step 4: Simplify right side
    389,810.90x = 72,249,663,742.73
  5. Step 5: Solve for x
    x = 72,249,663,742.73/389,810.90
  6. Step 6: Final answer
    x = 185,345.42

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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.