Home / 656,929.80-983,426.40-390,553.20

Finding the Fourth Proportional to 656,929.80, 983,426.40 and 390,553.20

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Solution

The fourth proportional to 656,929.80, 983,426.40 and 390,553.20 is: 584,659.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,929.80 : 983,426.40 = 390,553.20 : x
  2. Step 2: Convert to fraction form
    656,929.80/983,426.40 = 390,553.20/x
  3. Step 3: Cross multiply
    656,929.80x = 983,426.40 × 390,553.20
  4. Step 4: Simplify right side
    656,929.80x = 384,080,327,484.48
  5. Step 5: Solve for x
    x = 384,080,327,484.48/656,929.80
  6. Step 6: Final answer
    x = 584,659.62

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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.