Home / 612,982.72-918,695.40-275,663.08

Finding the Fourth Proportional to 612,982.72, 918,695.40 and 275,663.08

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Solution

The fourth proportional to 612,982.72, 918,695.40 and 275,663.08 is: 413,144.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,982.72 : 918,695.40 = 275,663.08 : x
  2. Step 2: Convert to fraction form
    612,982.72/918,695.40 = 275,663.08/x
  3. Step 3: Cross multiply
    612,982.72x = 918,695.40 × 275,663.08
  4. Step 4: Simplify right side
    612,982.72x = 253,250,403,545.83
  5. Step 5: Solve for x
    x = 253,250,403,545.83/612,982.72
  6. Step 6: Final answer
    x = 413,144.44

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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.