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Finding the Fourth Proportional to 1,208,385, 1,812,841.56 and 460,431

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Solution

The fourth proportional to 1,208,385, 1,812,841.56 and 460,431 is: 690,747.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,385 : 1,812,841.56 = 460,431 : x
  2. Step 2: Convert to fraction form
    1,208,385/1,812,841.56 = 460,431/x
  3. Step 3: Cross multiply
    1,208,385x = 1,812,841.56 × 460,431
  4. Step 4: Simplify right side
    1,208,385x = 834,688,452,312.36
  5. Step 5: Solve for x
    x = 834,688,452,312.36/1,208,385
  6. Step 6: Final answer
    x = 690,747.11

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Why These Related Problems?

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