Home / 1,299,007.80-1,948,818.90-412,543.80

Finding the Fourth Proportional to 1,299,007.80, 1,948,818.90 and 412,543.80

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Solution

The fourth proportional to 1,299,007.80, 1,948,818.90 and 412,543.80 is: 618,913.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,007.80 : 1,948,818.90 = 412,543.80 : x
  2. Step 2: Convert to fraction form
    1,299,007.80/1,948,818.90 = 412,543.80/x
  3. Step 3: Cross multiply
    1,299,007.80x = 1,948,818.90 × 412,543.80
  4. Step 4: Simplify right side
    1,299,007.80x = 803,973,154,517.82
  5. Step 5: Solve for x
    x = 803,973,154,517.82/1,299,007.80
  6. Step 6: Final answer
    x = 618,913.26

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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.