Home / 679,870.40-1,020,194.40-469,659.20

Finding the Fourth Proportional to 679,870.40, 1,020,194.40 and 469,659.20

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Solution

The fourth proportional to 679,870.40, 1,020,194.40 and 469,659.20 is: 704,757.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,870.40 : 1,020,194.40 = 469,659.20 : x
  2. Step 2: Convert to fraction form
    679,870.40/1,020,194.40 = 469,659.20/x
  3. Step 3: Cross multiply
    679,870.40x = 1,020,194.40 × 469,659.20
  4. Step 4: Simplify right side
    679,870.40x = 479,143,685,748.48
  5. Step 5: Solve for x
    x = 479,143,685,748.48/679,870.40
  6. Step 6: Final answer
    x = 704,757.39

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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.