Home / 389,962.40-584,943.60-290,429.60

Finding the Fourth Proportional to 389,962.40, 584,943.60 and 290,429.60

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Solution

The fourth proportional to 389,962.40, 584,943.60 and 290,429.60 is: 435,644.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,962.40 : 584,943.60 = 290,429.60 : x
  2. Step 2: Convert to fraction form
    389,962.40/584,943.60 = 290,429.60/x
  3. Step 3: Cross multiply
    389,962.40x = 584,943.60 × 290,429.60
  4. Step 4: Simplify right side
    389,962.40x = 169,884,935,770.56
  5. Step 5: Solve for x
    x = 169,884,935,770.56/389,962.40
  6. Step 6: Final answer
    x = 435,644.40

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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.