Home / 991,247.30-1,367,988.96-561,530.96

Finding the Fourth Proportional to 991,247.30, 1,367,988.96 and 561,530.96

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Solution

The fourth proportional to 991,247.30, 1,367,988.96 and 561,530.96 is: 774,951.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,247.30 : 1,367,988.96 = 561,530.96 : x
  2. Step 2: Convert to fraction form
    991,247.30/1,367,988.96 = 561,530.96/x
  3. Step 3: Cross multiply
    991,247.30x = 1,367,988.96 × 561,530.96
  4. Step 4: Simplify right side
    991,247.30x = 768,168,153,978.20
  5. Step 5: Solve for x
    x = 768,168,153,978.20/991,247.30
  6. Step 6: Final answer
    x = 774,951.07

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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.