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Finding the Fourth Proportional to 627,469.71, 865,904.88 and 340,990.92

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Solution

The fourth proportional to 627,469.71, 865,904.88 and 340,990.92 is: 470,565.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,469.71 : 865,904.88 = 340,990.92 : x
  2. Step 2: Convert to fraction form
    627,469.71/865,904.88 = 340,990.92/x
  3. Step 3: Cross multiply
    627,469.71x = 865,904.88 × 340,990.92
  4. Step 4: Simplify right side
    627,469.71x = 295,265,701,663.69
  5. Step 5: Solve for x
    x = 295,265,701,663.69/627,469.71
  6. Step 6: Final answer
    x = 470,565.67

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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.