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Finding the Fourth Proportional to 611,567.40, 917,351.10 and 452,135.10

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Solution

The fourth proportional to 611,567.40, 917,351.10 and 452,135.10 is: 678,202.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,567.40 : 917,351.10 = 452,135.10 : x
  2. Step 2: Convert to fraction form
    611,567.40/917,351.10 = 452,135.10/x
  3. Step 3: Cross multiply
    611,567.40x = 917,351.10 × 452,135.10
  4. Step 4: Simplify right side
    611,567.40x = 414,766,631,333.61
  5. Step 5: Solve for x
    x = 414,766,631,333.61/611,567.40
  6. Step 6: Final answer
    x = 678,202.65

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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.