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Finding the Fourth Proportional to 778,697.94, 1,168,085.16 and 379,679.78

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Solution

The fourth proportional to 778,697.94, 1,168,085.16 and 379,679.78 is: 569,538.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,697.94 : 1,168,085.16 = 379,679.78 : x
  2. Step 2: Convert to fraction form
    778,697.94/1,168,085.16 = 379,679.78/x
  3. Step 3: Cross multiply
    778,697.94x = 1,168,085.16 × 379,679.78
  4. Step 4: Simplify right side
    778,697.94x = 443,498,316,570.07
  5. Step 5: Solve for x
    x = 443,498,316,570.07/778,697.94
  6. Step 6: Final answer
    x = 569,538.32

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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.