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Finding the Fourth Proportional to 788,991.84, 1,182,638.88 and 339,924.24

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Solution

The fourth proportional to 788,991.84, 1,182,638.88 and 339,924.24 is: 509,520.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,991.84 : 1,182,638.88 = 339,924.24 : x
  2. Step 2: Convert to fraction form
    788,991.84/1,182,638.88 = 339,924.24/x
  3. Step 3: Cross multiply
    788,991.84x = 1,182,638.88 × 339,924.24
  4. Step 4: Simplify right side
    788,991.84x = 402,007,622,478.45
  5. Step 5: Solve for x
    x = 402,007,622,478.45/788,991.84
  6. Step 6: Final answer
    x = 509,520.63

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Double scale
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Similar ratio
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1.5x scale

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.