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Finding the Fourth Proportional to 1,213,464, 1,674,580.32 and 676,920

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Solution

The fourth proportional to 1,213,464, 1,674,580.32 and 676,920 is: 934,149.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,464 : 1,674,580.32 = 676,920 : x
  2. Step 2: Convert to fraction form
    1,213,464/1,674,580.32 = 676,920/x
  3. Step 3: Cross multiply
    1,213,464x = 1,674,580.32 × 676,920
  4. Step 4: Simplify right side
    1,213,464x = 1,133,556,910,214.40
  5. Step 5: Solve for x
    x = 1,133,556,910,214.40/1,213,464
  6. Step 6: Final answer
    x = 934,149.60

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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.