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Finding the Fourth Proportional to 1,008,449, 1,391,688.80 and 555,769.16

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Solution

The fourth proportional to 1,008,449, 1,391,688.80 and 555,769.16 is: 766,977.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,449 : 1,391,688.80 = 555,769.16 : x
  2. Step 2: Convert to fraction form
    1,008,449/1,391,688.80 = 555,769.16/x
  3. Step 3: Cross multiply
    1,008,449x = 1,391,688.80 × 555,769.16
  4. Step 4: Simplify right side
    1,008,449x = 773,457,715,357.41
  5. Step 5: Solve for x
    x = 773,457,715,357.41/1,008,449
  6. Step 6: Final answer
    x = 766,977.52

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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.