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Finding the Fourth Proportional to 611,712.12, 917,577.41 and 212,365.59

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Solution

The fourth proportional to 611,712.12, 917,577.41 and 212,365.59 is: 318,551.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,712.12 : 917,577.41 = 212,365.59 : x
  2. Step 2: Convert to fraction form
    611,712.12/917,577.41 = 212,365.59/x
  3. Step 3: Cross multiply
    611,712.12x = 917,577.41 × 212,365.59
  4. Step 4: Simplify right side
    611,712.12x = 194,861,868,045.32
  5. Step 5: Solve for x
    x = 194,861,868,045.32/611,712.12
  6. Step 6: Final answer
    x = 318,551.59

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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.