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Finding the Fourth Proportional to 717,548.62, 990,222.15 and 411,638.35

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Solution

The fourth proportional to 717,548.62, 990,222.15 and 411,638.35 is: 568,063.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,548.62 : 990,222.15 = 411,638.35 : x
  2. Step 2: Convert to fraction form
    717,548.62/990,222.15 = 411,638.35/x
  3. Step 3: Cross multiply
    717,548.62x = 990,222.15 × 411,638.35
  4. Step 4: Simplify right side
    717,548.62x = 407,613,411,959.45
  5. Step 5: Solve for x
    x = 407,613,411,959.45/717,548.62
  6. Step 6: Final answer
    x = 568,063.82

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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.