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Finding the Fourth Proportional to 1,123,720, 1,685,581.62 and 458,872

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Solution

The fourth proportional to 1,123,720, 1,685,581.62 and 458,872 is: 688,308.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,720 : 1,685,581.62 = 458,872 : x
  2. Step 2: Convert to fraction form
    1,123,720/1,685,581.62 = 458,872/x
  3. Step 3: Cross multiply
    1,123,720x = 1,685,581.62 × 458,872
  4. Step 4: Simplify right side
    1,123,720x = 773,466,209,132.64
  5. Step 5: Solve for x
    x = 773,466,209,132.64/1,123,720
  6. Step 6: Final answer
    x = 688,308.66

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.