Home / 664,875.40-997,313.10-310,581.40

Finding the Fourth Proportional to 664,875.40, 997,313.10 and 310,581.40

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Solution

The fourth proportional to 664,875.40, 997,313.10 and 310,581.40 is: 465,872.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,875.40 : 997,313.10 = 310,581.40 : x
  2. Step 2: Convert to fraction form
    664,875.40/997,313.10 = 310,581.40/x
  3. Step 3: Cross multiply
    664,875.40x = 997,313.10 × 310,581.40
  4. Step 4: Simplify right side
    664,875.40x = 309,746,898,836.34
  5. Step 5: Solve for x
    x = 309,746,898,836.34/664,875.40
  6. Step 6: Final answer
    x = 465,872.10

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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.