Home / 661,809.08-991,397.34-518,984.36

Finding the Fourth Proportional to 661,809.08, 991,397.34 and 518,984.36

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Solution

The fourth proportional to 661,809.08, 991,397.34 and 518,984.36 is: 777,444.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,809.08 : 991,397.34 = 518,984.36 : x
  2. Step 2: Convert to fraction form
    661,809.08/991,397.34 = 518,984.36/x
  3. Step 3: Cross multiply
    661,809.08x = 991,397.34 × 518,984.36
  4. Step 4: Simplify right side
    661,809.08x = 514,519,714,005.60
  5. Step 5: Solve for x
    x = 514,519,714,005.60/661,809.08
  6. Step 6: Final answer
    x = 777,444.33

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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.