Home / 645,822.30-968,733.45-442,868.70

Finding the Fourth Proportional to 645,822.30, 968,733.45 and 442,868.70

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Solution

The fourth proportional to 645,822.30, 968,733.45 and 442,868.70 is: 664,303.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,822.30 : 968,733.45 = 442,868.70 : x
  2. Step 2: Convert to fraction form
    645,822.30/968,733.45 = 442,868.70/x
  3. Step 3: Cross multiply
    645,822.30x = 968,733.45 × 442,868.70
  4. Step 4: Simplify right side
    645,822.30x = 429,021,723,648.02
  5. Step 5: Solve for x
    x = 429,021,723,648.02/645,822.30
  6. Step 6: Final answer
    x = 664,303.05

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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.