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Finding the Fourth Proportional to 710,343.94, 980,309.64 and 404,426.38

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Solution

The fourth proportional to 710,343.94, 980,309.64 and 404,426.38 is: 558,128.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,343.94 : 980,309.64 = 404,426.38 : x
  2. Step 2: Convert to fraction form
    710,343.94/980,309.64 = 404,426.38/x
  3. Step 3: Cross multiply
    710,343.94x = 980,309.64 × 404,426.38
  4. Step 4: Simplify right side
    710,343.94x = 396,463,078,984.30
  5. Step 5: Solve for x
    x = 396,463,078,984.30/710,343.94
  6. Step 6: Final answer
    x = 558,128.33

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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.