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Finding the Fourth Proportional to 978,073.90, 1,467,110.85 and 346,905.70

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Solution

The fourth proportional to 978,073.90, 1,467,110.85 and 346,905.70 is: 520,358.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,073.90 : 1,467,110.85 = 346,905.70 : x
  2. Step 2: Convert to fraction form
    978,073.90/1,467,110.85 = 346,905.70/x
  3. Step 3: Cross multiply
    978,073.90x = 1,467,110.85 × 346,905.70
  4. Step 4: Simplify right side
    978,073.90x = 508,949,116,396.85
  5. Step 5: Solve for x
    x = 508,949,116,396.85/978,073.90
  6. Step 6: Final answer
    x = 520,358.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.