Home / 661,432.40-912,847.56-374,921.36

Finding the Fourth Proportional to 661,432.40, 912,847.56 and 374,921.36

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Solution

The fourth proportional to 661,432.40, 912,847.56 and 374,921.36 is: 517,431.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,432.40 : 912,847.56 = 374,921.36 : x
  2. Step 2: Convert to fraction form
    661,432.40/912,847.56 = 374,921.36/x
  3. Step 3: Cross multiply
    661,432.40x = 912,847.56 × 374,921.36
  4. Step 4: Simplify right side
    661,432.40x = 342,246,048,667.88
  5. Step 5: Solve for x
    x = 342,246,048,667.88/661,432.40
  6. Step 6: Final answer
    x = 517,431.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.