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Finding the Fourth Proportional to 646,044.80, 969,110.40 and 219,574.40

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Solution

The fourth proportional to 646,044.80, 969,110.40 and 219,574.40 is: 329,376.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,044.80 : 969,110.40 = 219,574.40 : x
  2. Step 2: Convert to fraction form
    646,044.80/969,110.40 = 219,574.40/x
  3. Step 3: Cross multiply
    646,044.80x = 969,110.40 × 219,574.40
  4. Step 4: Simplify right side
    646,044.80x = 212,791,834,613.76
  5. Step 5: Solve for x
    x = 212,791,834,613.76/646,044.80
  6. Step 6: Final answer
    x = 329,376.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.