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Finding the Fourth Proportional to 717,567.12, 990,247.68 and 411,656.85

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Solution

The fourth proportional to 717,567.12, 990,247.68 and 411,656.85 is: 568,089.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,567.12 : 990,247.68 = 411,656.85 : x
  2. Step 2: Convert to fraction form
    717,567.12/990,247.68 = 411,656.85/x
  3. Step 3: Cross multiply
    717,567.12x = 990,247.68 × 411,656.85
  4. Step 4: Simplify right side
    717,567.12x = 407,642,240,668.61
  5. Step 5: Solve for x
    x = 407,642,240,668.61/717,567.12
  6. Step 6: Final answer
    x = 568,089.35

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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.