Home / 991,298.40-1,367,995.20-561,658.08

Finding the Fourth Proportional to 991,298.40, 1,367,995.20 and 561,658.08

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Solution

The fourth proportional to 991,298.40, 1,367,995.20 and 561,658.08 is: 775,090.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,298.40 : 1,367,995.20 = 561,658.08 : x
  2. Step 2: Convert to fraction form
    991,298.40/1,367,995.20 = 561,658.08/x
  3. Step 3: Cross multiply
    991,298.40x = 1,367,995.20 × 561,658.08
  4. Step 4: Simplify right side
    991,298.40x = 768,345,557,481.22
  5. Step 5: Solve for x
    x = 768,345,557,481.22/991,298.40
  6. Step 6: Final answer
    x = 775,090.08

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1.5x scale

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.