Home / 991,013.52-1,367,616.60-561,382.86

Finding the Fourth Proportional to 991,013.52, 1,367,616.60 and 561,382.86

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Solution

The fourth proportional to 991,013.52, 1,367,616.60 and 561,382.86 is: 774,718.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,013.52 : 1,367,616.60 = 561,382.86 : x
  2. Step 2: Convert to fraction form
    991,013.52/1,367,616.60 = 561,382.86/x
  3. Step 3: Cross multiply
    991,013.52x = 1,367,616.60 × 561,382.86
  4. Step 4: Simplify right side
    991,013.52x = 767,756,518,291.48
  5. Step 5: Solve for x
    x = 767,756,518,291.48/991,013.52
  6. Step 6: Final answer
    x = 774,718.51

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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.