Home / 686,971.27-1,030,459.54-287,331.70

Finding the Fourth Proportional to 686,971.27, 1,030,459.54 and 287,331.70

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Solution

The fourth proportional to 686,971.27, 1,030,459.54 and 287,331.70 is: 430,998.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,971.27 : 1,030,459.54 = 287,331.70 : x
  2. Step 2: Convert to fraction form
    686,971.27/1,030,459.54 = 287,331.70/x
  3. Step 3: Cross multiply
    686,971.27x = 1,030,459.54 × 287,331.70
  4. Step 4: Simplify right side
    686,971.27x = 296,083,691,409.42
  5. Step 5: Solve for x
    x = 296,083,691,409.42/686,971.27
  6. Step 6: Final answer
    x = 430,998.65

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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.