Home / 813,219.97-1,121,875.55-490,827.01

Finding the Fourth Proportional to 813,219.97, 1,121,875.55 and 490,827.01

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Solution

The fourth proportional to 813,219.97, 1,121,875.55 and 490,827.01 is: 677,119.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,219.97 : 1,121,875.55 = 490,827.01 : x
  2. Step 2: Convert to fraction form
    813,219.97/1,121,875.55 = 490,827.01/x
  3. Step 3: Cross multiply
    813,219.97x = 1,121,875.55 × 490,827.01
  4. Step 4: Simplify right side
    813,219.97x = 550,646,817,416.30
  5. Step 5: Solve for x
    x = 550,646,817,416.30/813,219.97
  6. Step 6: Final answer
    x = 677,119.16

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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.