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Finding the Fourth Proportional to 640,020.80, 960,031.20 and 535,044.80

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Solution

The fourth proportional to 640,020.80, 960,031.20 and 535,044.80 is: 802,567.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,020.80 : 960,031.20 = 535,044.80 : x
  2. Step 2: Convert to fraction form
    640,020.80/960,031.20 = 535,044.80/x
  3. Step 3: Cross multiply
    640,020.80x = 960,031.20 × 535,044.80
  4. Step 4: Simplify right side
    640,020.80x = 513,659,701,397.76
  5. Step 5: Solve for x
    x = 513,659,701,397.76/640,020.80
  6. Step 6: Final answer
    x = 802,567.20

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Similar ratio
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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.