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Finding the Fourth Proportional to 662,261.68, 913,940.68 and 469,015.12

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Solution

The fourth proportional to 662,261.68, 913,940.68 and 469,015.12 is: 647,254.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,261.68 : 913,940.68 = 469,015.12 : x
  2. Step 2: Convert to fraction form
    662,261.68/913,940.68 = 469,015.12/x
  3. Step 3: Cross multiply
    662,261.68x = 913,940.68 × 469,015.12
  4. Step 4: Simplify right side
    662,261.68x = 428,651,997,703.08
  5. Step 5: Solve for x
    x = 428,651,997,703.08/662,261.68
  6. Step 6: Final answer
    x = 647,254.72

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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.