Home / 1,298,493.40-1,947,740.10-800,138.20

Finding the Fourth Proportional to 1,298,493.40, 1,947,740.10 and 800,138.20

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Solution

The fourth proportional to 1,298,493.40, 1,947,740.10 and 800,138.20 is: 1,200,207.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,493.40 : 1,947,740.10 = 800,138.20 : x
  2. Step 2: Convert to fraction form
    1,298,493.40/1,947,740.10 = 800,138.20/x
  3. Step 3: Cross multiply
    1,298,493.40x = 1,947,740.10 × 800,138.20
  4. Step 4: Simplify right side
    1,298,493.40x = 1,558,461,257,681.82
  5. Step 5: Solve for x
    x = 1,558,461,257,681.82/1,298,493.40
  6. Step 6: Final answer
    x = 1,200,207.30

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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.