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Finding the Fourth Proportional to 710,639.22, 980,367.12 and 423,992.64

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Solution

The fourth proportional to 710,639.22, 980,367.12 and 423,992.64 is: 584,921.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,639.22 : 980,367.12 = 423,992.64 : x
  2. Step 2: Convert to fraction form
    710,639.22/980,367.12 = 423,992.64/x
  3. Step 3: Cross multiply
    710,639.22x = 980,367.12 × 423,992.64
  4. Step 4: Simplify right side
    710,639.22x = 415,668,443,378.00
  5. Step 5: Solve for x
    x = 415,668,443,378.00/710,639.22
  6. Step 6: Final answer
    x = 584,921.90

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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.