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Finding the Fourth Proportional to 647,755.20, 970,320.60 and 366,944.40

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Solution

The fourth proportional to 647,755.20, 970,320.60 and 366,944.40 is: 549,673.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,755.20 : 970,320.60 = 366,944.40 : x
  2. Step 2: Convert to fraction form
    647,755.20/970,320.60 = 366,944.40/x
  3. Step 3: Cross multiply
    647,755.20x = 970,320.60 × 366,944.40
  4. Step 4: Simplify right side
    647,755.20x = 356,053,710,374.64
  5. Step 5: Solve for x
    x = 356,053,710,374.64/647,755.20
  6. Step 6: Final answer
    x = 549,673.26

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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.