Home / 389,965.40-584,948.10-290,432.60

Finding the Fourth Proportional to 389,965.40, 584,948.10 and 290,432.60

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Solution

The fourth proportional to 389,965.40, 584,948.10 and 290,432.60 is: 435,648.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,965.40 : 584,948.10 = 290,432.60 : x
  2. Step 2: Convert to fraction form
    389,965.40/584,948.10 = 290,432.60/x
  3. Step 3: Cross multiply
    389,965.40x = 584,948.10 × 290,432.60
  4. Step 4: Simplify right side
    389,965.40x = 169,887,997,548.06
  5. Step 5: Solve for x
    x = 169,887,997,548.06/389,965.40
  6. Step 6: Final answer
    x = 435,648.90

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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.