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Finding the Fourth Proportional to 1,008,397, 1,391,587.86 and 555,688

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Solution

The fourth proportional to 1,008,397, 1,391,587.86 and 555,688 is: 766,849.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,397 : 1,391,587.86 = 555,688 : x
  2. Step 2: Convert to fraction form
    1,008,397/1,391,587.86 = 555,688/x
  3. Step 3: Cross multiply
    1,008,397x = 1,391,587.86 × 555,688
  4. Step 4: Simplify right side
    1,008,397x = 773,288,674,747.68
  5. Step 5: Solve for x
    x = 773,288,674,747.68/1,008,397
  6. Step 6: Final answer
    x = 766,849.44

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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.