Home / 817,689.30-1,218,142.77-780,801.15

Finding the Fourth Proportional to 817,689.30, 1,218,142.77 and 780,801.15

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Solution

The fourth proportional to 817,689.30, 1,218,142.77 and 780,801.15 is: 1,163,189.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,689.30 : 1,218,142.77 = 780,801.15 : x
  2. Step 2: Convert to fraction form
    817,689.30/1,218,142.77 = 780,801.15/x
  3. Step 3: Cross multiply
    817,689.30x = 1,218,142.77 × 780,801.15
  4. Step 4: Simplify right side
    817,689.30x = 951,127,275,680.19
  5. Step 5: Solve for x
    x = 951,127,275,680.19/817,689.30
  6. Step 6: Final answer
    x = 1,163,189.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.