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Finding the Fourth Proportional to 543,641.62, 750,284.92 and 311,090.05

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Solution

The fourth proportional to 543,641.62, 750,284.92 and 311,090.05 is: 429,338.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,641.62 : 750,284.92 = 311,090.05 : x
  2. Step 2: Convert to fraction form
    543,641.62/750,284.92 = 311,090.05/x
  3. Step 3: Cross multiply
    543,641.62x = 750,284.92 × 311,090.05
  4. Step 4: Simplify right side
    543,641.62x = 233,406,172,499.32
  5. Step 5: Solve for x
    x = 233,406,172,499.32/543,641.62
  6. Step 6: Final answer
    x = 429,338.31

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1.5x scale

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.