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Finding the Fourth Proportional to 777,955.40, 1,168,682.70 and 748,212.20

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Solution

The fourth proportional to 777,955.40, 1,168,682.70 and 748,212.20 is: 1,124,001.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,955.40 : 1,168,682.70 = 748,212.20 : x
  2. Step 2: Convert to fraction form
    777,955.40/1,168,682.70 = 748,212.20/x
  3. Step 3: Cross multiply
    777,955.40x = 1,168,682.70 × 748,212.20
  4. Step 4: Simplify right side
    777,955.40x = 874,422,654,068.94
  5. Step 5: Solve for x
    x = 874,422,654,068.94/777,955.40
  6. Step 6: Final answer
    x = 1,124,001.01

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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.