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Finding the Fourth Proportional to 1,262,926.66, 1,895,587.65 and 781,698.79

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Solution

The fourth proportional to 1,262,926.66, 1,895,587.65 and 781,698.79 is: 1,173,289.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262,926.66 : 1,895,587.65 = 781,698.79 : x
  2. Step 2: Convert to fraction form
    1,262,926.66/1,895,587.65 = 781,698.79/x
  3. Step 3: Cross multiply
    1,262,926.66x = 1,895,587.65 × 781,698.79
  4. Step 4: Simplify right side
    1,262,926.66x = 1,481,778,572,343.94
  5. Step 5: Solve for x
    x = 1,481,778,572,343.94/1,262,926.66
  6. Step 6: Final answer
    x = 1,173,289.49

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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.