Home / 1,205,139.17-1,663,197.27-661,379.90

Finding the Fourth Proportional to 1,205,139.17, 1,663,197.27 and 661,379.90

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Solution

The fourth proportional to 1,205,139.17, 1,663,197.27 and 661,379.90 is: 912,762.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205,139.17 : 1,663,197.27 = 661,379.90 : x
  2. Step 2: Convert to fraction form
    1,205,139.17/1,663,197.27 = 661,379.90/x
  3. Step 3: Cross multiply
    1,205,139.17x = 1,663,197.27 × 661,379.90
  4. Step 4: Simplify right side
    1,205,139.17x = 1,100,005,237,050.70
  5. Step 5: Solve for x
    x = 1,100,005,237,050.70/1,205,139.17
  6. Step 6: Final answer
    x = 912,762.00

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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.