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Finding the Fourth Proportional to 1,971,225.71, 2,955,706.79 and 771,743.69

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Solution

The fourth proportional to 1,971,225.71, 2,955,706.79 and 771,743.69 is: 1,157,172.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971,225.71 : 2,955,706.79 = 771,743.69 : x
  2. Step 2: Convert to fraction form
    1,971,225.71/2,955,706.79 = 771,743.69/x
  3. Step 3: Cross multiply
    1,971,225.71x = 2,955,706.79 × 771,743.69
  4. Step 4: Simplify right side
    1,971,225.71x = 2,281,048,046,035.40
  5. Step 5: Solve for x
    x = 2,281,048,046,035.40/1,971,225.71
  6. Step 6: Final answer
    x = 1,157,172.43

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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.