Home / 743,014.30-1,025,363.66-420,787.12

Finding the Fourth Proportional to 743,014.30, 1,025,363.66 and 420,787.12

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Solution

The fourth proportional to 743,014.30, 1,025,363.66 and 420,787.12 is: 580,688.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,014.30 : 1,025,363.66 = 420,787.12 : x
  2. Step 2: Convert to fraction form
    743,014.30/1,025,363.66 = 420,787.12/x
  3. Step 3: Cross multiply
    743,014.30x = 1,025,363.66 × 420,787.12
  4. Step 4: Simplify right side
    743,014.30x = 431,459,821,444.06
  5. Step 5: Solve for x
    x = 431,459,821,444.06/743,014.30
  6. Step 6: Final answer
    x = 580,688.45

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Double scale
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Similar ratio
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1.5x scale

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.