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Finding the Fourth Proportional to 710,344.20, 980,309.99 and 404,426.64

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Solution

The fourth proportional to 710,344.20, 980,309.99 and 404,426.64 is: 558,128.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,344.20 : 980,309.99 = 404,426.64 : x
  2. Step 2: Convert to fraction form
    710,344.20/980,309.99 = 404,426.64/x
  3. Step 3: Cross multiply
    710,344.20x = 980,309.99 × 404,426.64
  4. Step 4: Simplify right side
    710,344.20x = 396,463,473,392.00
  5. Step 5: Solve for x
    x = 396,463,473,392.00/710,344.20
  6. Step 6: Final answer
    x = 558,128.68

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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.