Home / 1,091,500-1,506,371.88-638,791.36

Finding the Fourth Proportional to 1,091,500, 1,506,371.88 and 638,791.36

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Solution

The fourth proportional to 1,091,500, 1,506,371.88 and 638,791.36 is: 881,591.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091,500 : 1,506,371.88 = 638,791.36 : x
  2. Step 2: Convert to fraction form
    1,091,500/1,506,371.88 = 638,791.36/x
  3. Step 3: Cross multiply
    1,091,500x = 1,506,371.88 × 638,791.36
  4. Step 4: Simplify right side
    1,091,500x = 962,257,341,890.96
  5. Step 5: Solve for x
    x = 962,257,341,890.96/1,091,500
  6. Step 6: Final answer
    x = 881,591.70

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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.