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Finding the Fourth Proportional to 700,707.60, 966,976.29 and 378,417.60

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Solution

The fourth proportional to 700,707.60, 966,976.29 and 378,417.60 is: 522,216.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,707.60 : 966,976.29 = 378,417.60 : x
  2. Step 2: Convert to fraction form
    700,707.60/966,976.29 = 378,417.60/x
  3. Step 3: Cross multiply
    700,707.60x = 966,976.29 × 378,417.60
  4. Step 4: Simplify right side
    700,707.60x = 365,920,846,918.70
  5. Step 5: Solve for x
    x = 365,920,846,918.70/700,707.60
  6. Step 6: Final answer
    x = 522,216.18

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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.