Home / 990,937.31-1,367,511.51-561,306.64

Finding the Fourth Proportional to 990,937.31, 1,367,511.51 and 561,306.64

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Solution

The fourth proportional to 990,937.31, 1,367,511.51 and 561,306.64 is: 774,613.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,937.31 : 1,367,511.51 = 561,306.64 : x
  2. Step 2: Convert to fraction form
    990,937.31/1,367,511.51 = 561,306.64/x
  3. Step 3: Cross multiply
    990,937.31x = 1,367,511.51 × 561,306.64
  4. Step 4: Simplify right side
    990,937.31x = 767,593,284,001.87
  5. Step 5: Solve for x
    x = 767,593,284,001.87/990,937.31
  6. Step 6: Final answer
    x = 774,613.36

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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.