Home / 1,145,009.80-1,717,514.70-987,416.20

Finding the Fourth Proportional to 1,145,009.80, 1,717,514.70 and 987,416.20

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Solution

The fourth proportional to 1,145,009.80, 1,717,514.70 and 987,416.20 is: 1,481,124.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145,009.80 : 1,717,514.70 = 987,416.20 : x
  2. Step 2: Convert to fraction form
    1,145,009.80/1,717,514.70 = 987,416.20/x
  3. Step 3: Cross multiply
    1,145,009.80x = 1,717,514.70 × 987,416.20
  4. Step 4: Simplify right side
    1,145,009.80x = 1,695,901,838,518.14
  5. Step 5: Solve for x
    x = 1,695,901,838,518.14/1,145,009.80
  6. Step 6: Final answer
    x = 1,481,124.30

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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.