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Finding the Fourth Proportional to 1,376,360, 1,899,376.80 and 772,748

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Solution

The fourth proportional to 1,376,360, 1,899,376.80 and 772,748 is: 1,066,392.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,376,360 : 1,899,376.80 = 772,748 : x
  2. Step 2: Convert to fraction form
    1,376,360/1,899,376.80 = 772,748/x
  3. Step 3: Cross multiply
    1,376,360x = 1,899,376.80 × 772,748
  4. Step 4: Simplify right side
    1,376,360x = 1,467,739,623,446.40
  5. Step 5: Solve for x
    x = 1,467,739,623,446.40/1,376,360
  6. Step 6: Final answer
    x = 1,066,392.24

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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.