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Finding the Fourth Proportional to 676,572.84, 933,670.43 and 404,640.69

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Solution

The fourth proportional to 676,572.84, 933,670.43 and 404,640.69 is: 558,404.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,572.84 : 933,670.43 = 404,640.69 : x
  2. Step 2: Convert to fraction form
    676,572.84/933,670.43 = 404,640.69/x
  3. Step 3: Cross multiply
    676,572.84x = 933,670.43 × 404,640.69
  4. Step 4: Simplify right side
    676,572.84x = 377,801,047,027.80
  5. Step 5: Solve for x
    x = 377,801,047,027.80/676,572.84
  6. Step 6: Final answer
    x = 558,404.10

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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.