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Finding the Fourth Proportional to 710,215.96, 980,451.52 and 438,433.66

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Solution

The fourth proportional to 710,215.96, 980,451.52 and 438,433.66 is: 605,256.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,215.96 : 980,451.52 = 438,433.66 : x
  2. Step 2: Convert to fraction form
    710,215.96/980,451.52 = 438,433.66/x
  3. Step 3: Cross multiply
    710,215.96x = 980,451.52 × 438,433.66
  4. Step 4: Simplify right side
    710,215.96x = 429,862,948,366.16
  5. Step 5: Solve for x
    x = 429,862,948,366.16/710,215.96
  6. Step 6: Final answer
    x = 605,256.67

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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.