Home / 684,690.30-1,027,132.65-211,326.30

Finding the Fourth Proportional to 684,690.30, 1,027,132.65 and 211,326.30

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Solution

The fourth proportional to 684,690.30, 1,027,132.65 and 211,326.30 is: 317,019.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,690.30 : 1,027,132.65 = 211,326.30 : x
  2. Step 2: Convert to fraction form
    684,690.30/1,027,132.65 = 211,326.30/x
  3. Step 3: Cross multiply
    684,690.30x = 1,027,132.65 × 211,326.30
  4. Step 4: Simplify right side
    684,690.30x = 217,060,142,533.70
  5. Step 5: Solve for x
    x = 217,060,142,533.70/684,690.30
  6. Step 6: Final answer
    x = 317,019.45

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.