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Finding the Fourth Proportional to 640,920.18, 884,446.66 and 350,521.82

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Solution

The fourth proportional to 640,920.18, 884,446.66 and 350,521.82 is: 483,707.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,920.18 : 884,446.66 = 350,521.82 : x
  2. Step 2: Convert to fraction form
    640,920.18/884,446.66 = 350,521.82/x
  3. Step 3: Cross multiply
    640,920.18x = 884,446.66 × 350,521.82
  4. Step 4: Simplify right side
    640,920.18x = 310,017,852,956.12
  5. Step 5: Solve for x
    x = 310,017,852,956.12/640,920.18
  6. Step 6: Final answer
    x = 483,707.43

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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.