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Finding the Fourth Proportional to 821,201, 1,125,026.61 and 790,498.71

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Solution

The fourth proportional to 821,201, 1,125,026.61 and 790,498.71 is: 1,082,965.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,201 : 1,125,026.61 = 790,498.71 : x
  2. Step 2: Convert to fraction form
    821,201/1,125,026.61 = 790,498.71/x
  3. Step 3: Cross multiply
    821,201x = 1,125,026.61 × 790,498.71
  4. Step 4: Simplify right side
    821,201x = 889,332,083,920.67
  5. Step 5: Solve for x
    x = 889,332,083,920.67/821,201
  6. Step 6: Final answer
    x = 1,082,965.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.