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Finding the Fourth Proportional to 1,266,881.37, 1,748,470.26 and 776,764.23

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Solution

The fourth proportional to 1,266,881.37, 1,748,470.26 and 776,764.23 is: 1,072,041.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266,881.37 : 1,748,470.26 = 776,764.23 : x
  2. Step 2: Convert to fraction form
    1,266,881.37/1,748,470.26 = 776,764.23/x
  3. Step 3: Cross multiply
    1,266,881.37x = 1,748,470.26 × 776,764.23
  4. Step 4: Simplify right side
    1,266,881.37x = 1,358,149,155,186.80
  5. Step 5: Solve for x
    x = 1,358,149,155,186.80/1,266,881.37
  6. Step 6: Final answer
    x = 1,072,041.30

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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.