Home / 1,298,780.80-1,948,478.40-412,316.80

Finding the Fourth Proportional to 1,298,780.80, 1,948,478.40 and 412,316.80

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Solution

The fourth proportional to 1,298,780.80, 1,948,478.40 and 412,316.80 is: 618,572.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,780.80 : 1,948,478.40 = 412,316.80 : x
  2. Step 2: Convert to fraction form
    1,298,780.80/1,948,478.40 = 412,316.80/x
  3. Step 3: Cross multiply
    1,298,780.80x = 1,948,478.40 × 412,316.80
  4. Step 4: Simplify right side
    1,298,780.80x = 803,390,378,757.12
  5. Step 5: Solve for x
    x = 803,390,378,757.12/1,298,780.80
  6. Step 6: Final answer
    x = 618,572.73

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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.