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Finding the Fourth Proportional to 1,008,323, 1,391,515.44 and 555,643.16

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Solution

The fourth proportional to 1,008,323, 1,391,515.44 and 555,643.16 is: 766,803.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,323 : 1,391,515.44 = 555,643.16 : x
  2. Step 2: Convert to fraction form
    1,008,323/1,391,515.44 = 555,643.16/x
  3. Step 3: Cross multiply
    1,008,323x = 1,391,515.44 × 555,643.16
  4. Step 4: Simplify right side
    1,008,323x = 773,186,036,270.39
  5. Step 5: Solve for x
    x = 773,186,036,270.39/1,008,323
  6. Step 6: Final answer
    x = 766,803.93

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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.