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Finding the Fourth Proportional to 1,213,461, 1,674,576.18 and 676,917

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Solution

The fourth proportional to 1,213,461, 1,674,576.18 and 676,917 is: 934,145.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,461 : 1,674,576.18 = 676,917 : x
  2. Step 2: Convert to fraction form
    1,213,461/1,674,576.18 = 676,917/x
  3. Step 3: Cross multiply
    1,213,461x = 1,674,576.18 × 676,917
  4. Step 4: Simplify right side
    1,213,461x = 1,133,549,084,037.06
  5. Step 5: Solve for x
    x = 1,133,549,084,037.06/1,213,461
  6. Step 6: Final answer
    x = 934,145.46

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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.