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Finding the Fourth Proportional to 668,925.27, 923,055.30 and 396,946.29

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Solution

The fourth proportional to 668,925.27, 923,055.30 and 396,946.29 is: 547,749.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,925.27 : 923,055.30 = 396,946.29 : x
  2. Step 2: Convert to fraction form
    668,925.27/923,055.30 = 396,946.29/x
  3. Step 3: Cross multiply
    668,925.27x = 923,055.30 × 396,946.29
  4. Step 4: Simplify right side
    668,925.27x = 366,403,376,799.84
  5. Step 5: Solve for x
    x = 366,403,376,799.84/668,925.27
  6. Step 6: Final answer
    x = 547,749.34

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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.