Home / 664,863.40-997,295.10-310,569.40

Finding the Fourth Proportional to 664,863.40, 997,295.10 and 310,569.40

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Solution

The fourth proportional to 664,863.40, 997,295.10 and 310,569.40 is: 465,854.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,863.40 : 997,295.10 = 310,569.40 : x
  2. Step 2: Convert to fraction form
    664,863.40/997,295.10 = 310,569.40/x
  3. Step 3: Cross multiply
    664,863.40x = 997,295.10 × 310,569.40
  4. Step 4: Simplify right side
    664,863.40x = 309,729,340,829.94
  5. Step 5: Solve for x
    x = 309,729,340,829.94/664,863.40
  6. Step 6: Final answer
    x = 465,854.10

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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.