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Finding the Fourth Proportional to 710,308.32, 980,255.28 and 408,502.56

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Solution

The fourth proportional to 710,308.32, 980,255.28 and 408,502.56 is: 563,750.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,308.32 : 980,255.28 = 408,502.56 : x
  2. Step 2: Convert to fraction form
    710,308.32/980,255.28 = 408,502.56/x
  3. Step 3: Cross multiply
    710,308.32x = 980,255.28 × 408,502.56
  4. Step 4: Simplify right side
    710,308.32x = 400,436,791,333.52
  5. Step 5: Solve for x
    x = 400,436,791,333.52/710,308.32
  6. Step 6: Final answer
    x = 563,750.67

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1.5x scale

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.