Home / 692,812.20-1,039,218.30-456,421.80

Finding the Fourth Proportional to 692,812.20, 1,039,218.30 and 456,421.80

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Solution

The fourth proportional to 692,812.20, 1,039,218.30 and 456,421.80 is: 684,632.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,812.20 : 1,039,218.30 = 456,421.80 : x
  2. Step 2: Convert to fraction form
    692,812.20/1,039,218.30 = 456,421.80/x
  3. Step 3: Cross multiply
    692,812.20x = 1,039,218.30 × 456,421.80
  4. Step 4: Simplify right side
    692,812.20x = 474,321,887,078.94
  5. Step 5: Solve for x
    x = 474,321,887,078.94/692,812.20
  6. Step 6: Final answer
    x = 684,632.70

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.