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Finding the Fourth Proportional to 700,702.48, 966,969.38 and 378,412.54

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Solution

The fourth proportional to 700,702.48, 966,969.38 and 378,412.54 is: 522,209.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,702.48 : 966,969.38 = 378,412.54 : x
  2. Step 2: Convert to fraction form
    700,702.48/966,969.38 = 378,412.54/x
  3. Step 3: Cross multiply
    700,702.48x = 966,969.38 × 378,412.54
  4. Step 4: Simplify right side
    700,702.48x = 365,913,339,188.03
  5. Step 5: Solve for x
    x = 365,913,339,188.03/700,702.48
  6. Step 6: Final answer
    x = 522,209.28

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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.