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Finding the Fourth Proportional to 455,979.40, 683,969.10 and 351,003.40

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Solution

The fourth proportional to 455,979.40, 683,969.10 and 351,003.40 is: 526,505.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,979.40 : 683,969.10 = 351,003.40 : x
  2. Step 2: Convert to fraction form
    455,979.40/683,969.10 = 351,003.40/x
  3. Step 3: Cross multiply
    455,979.40x = 683,969.10 × 351,003.40
  4. Step 4: Simplify right side
    455,979.40x = 240,075,479,594.94
  5. Step 5: Solve for x
    x = 240,075,479,594.94/455,979.40
  6. Step 6: Final answer
    x = 526,505.10

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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.