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Finding the Fourth Proportional to 717,988.10, 990,992.42 and 446,261.21

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Solution

The fourth proportional to 717,988.10, 990,992.42 and 446,261.21 is: 615,945.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,988.10 : 990,992.42 = 446,261.21 : x
  2. Step 2: Convert to fraction form
    717,988.10/990,992.42 = 446,261.21/x
  3. Step 3: Cross multiply
    717,988.10x = 990,992.42 × 446,261.21
  4. Step 4: Simplify right side
    717,988.10x = 442,241,474,653.46
  5. Step 5: Solve for x
    x = 442,241,474,653.46/717,988.10
  6. Step 6: Final answer
    x = 615,945.41

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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.