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Finding the Fourth Proportional to 717,738.58, 990,501.60 and 411,870.97

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Solution

The fourth proportional to 717,738.58, 990,501.60 and 411,870.97 is: 568,394.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,738.58 : 990,501.60 = 411,870.97 : x
  2. Step 2: Convert to fraction form
    717,738.58/990,501.60 = 411,870.97/x
  3. Step 3: Cross multiply
    717,738.58x = 990,501.60 × 411,870.97
  4. Step 4: Simplify right side
    717,738.58x = 407,958,854,778.55
  5. Step 5: Solve for x
    x = 407,958,854,778.55/717,738.58
  6. Step 6: Final answer
    x = 568,394.77

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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.