Home / 746,320.40-1,029,919.71-406,788.64

Finding the Fourth Proportional to 746,320.40, 1,029,919.71 and 406,788.64

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Solution

The fourth proportional to 746,320.40, 1,029,919.71 and 406,788.64 is: 561,366.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    746,320.40 : 1,029,919.71 = 406,788.64 : x
  2. Step 2: Convert to fraction form
    746,320.40/1,029,919.71 = 406,788.64/x
  3. Step 3: Cross multiply
    746,320.40x = 1,029,919.71 × 406,788.64
  4. Step 4: Simplify right side
    746,320.40x = 418,959,638,140.09
  5. Step 5: Solve for x
    x = 418,959,638,140.09/746,320.40
  6. Step 6: Final answer
    x = 561,366.99

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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.