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Finding the Fourth Proportional to 648,011.70, 970,705.35 and 367,200.90

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Solution

The fourth proportional to 648,011.70, 970,705.35 and 367,200.90 is: 550,057.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,011.70 : 970,705.35 = 367,200.90 : x
  2. Step 2: Convert to fraction form
    648,011.70/970,705.35 = 367,200.90/x
  3. Step 3: Cross multiply
    648,011.70x = 970,705.35 × 367,200.90
  4. Step 4: Simplify right side
    648,011.70x = 356,443,878,154.82
  5. Step 5: Solve for x
    x = 356,443,878,154.82/648,011.70
  6. Step 6: Final answer
    x = 550,057.78

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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.