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Finding the Fourth Proportional to 1,220,967, 1,684,934.46 and 684,423

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Solution

The fourth proportional to 1,220,967, 1,684,934.46 and 684,423 is: 944,503.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,967 : 1,684,934.46 = 684,423 : x
  2. Step 2: Convert to fraction form
    1,220,967/1,684,934.46 = 684,423/x
  3. Step 3: Cross multiply
    1,220,967x = 1,684,934.46 × 684,423
  4. Step 4: Simplify right side
    1,220,967x = 1,153,207,897,916.58
  5. Step 5: Solve for x
    x = 1,153,207,897,916.58/1,220,967
  6. Step 6: Final answer
    x = 944,503.74

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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.