Home / 1,240,878.80-1,861,663.80-609,813.20

Finding the Fourth Proportional to 1,240,878.80, 1,861,663.80 and 609,813.20

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Solution

The fourth proportional to 1,240,878.80, 1,861,663.80 and 609,813.20 is: 914,889.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,878.80 : 1,861,663.80 = 609,813.20 : x
  2. Step 2: Convert to fraction form
    1,240,878.80/1,861,663.80 = 609,813.20/x
  3. Step 3: Cross multiply
    1,240,878.80x = 1,861,663.80 × 609,813.20
  4. Step 4: Simplify right side
    1,240,878.80x = 1,135,267,159,202.16
  5. Step 5: Solve for x
    x = 1,135,267,159,202.16/1,240,878.80
  6. Step 6: Final answer
    x = 914,889.64

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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.