Home / 991,007.65-1,367,808.29-651,507.49

Finding the Fourth Proportional to 991,007.65, 1,367,808.29 and 651,507.49

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Solution

The fourth proportional to 991,007.65, 1,367,808.29 and 651,507.49 is: 899,223.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,007.65 : 1,367,808.29 = 651,507.49 : x
  2. Step 2: Convert to fraction form
    991,007.65/1,367,808.29 = 651,507.49/x
  3. Step 3: Cross multiply
    991,007.65x = 1,367,808.29 × 651,507.49
  4. Step 4: Simplify right side
    991,007.65x = 891,137,345,819.09
  5. Step 5: Solve for x
    x = 891,137,345,819.09/991,007.65
  6. Step 6: Final answer
    x = 899,223.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.