Home / 811,648.30-1,119,864.49-484,827.58

Finding the Fourth Proportional to 811,648.30, 1,119,864.49 and 484,827.58

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Solution

The fourth proportional to 811,648.30, 1,119,864.49 and 484,827.58 is: 668,936.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,648.30 : 1,119,864.49 = 484,827.58 : x
  2. Step 2: Convert to fraction form
    811,648.30/1,119,864.49 = 484,827.58/x
  3. Step 3: Cross multiply
    811,648.30x = 1,119,864.49 × 484,827.58
  4. Step 4: Simplify right side
    811,648.30x = 542,941,190,614.63
  5. Step 5: Solve for x
    x = 542,941,190,614.63/811,648.30
  6. Step 6: Final answer
    x = 668,936.52

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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.