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Finding the Fourth Proportional to 608,426.79, 839,887.51 and 379,097.38

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Solution

The fourth proportional to 608,426.79, 839,887.51 and 379,097.38 is: 523,315.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,426.79 : 839,887.51 = 379,097.38 : x
  2. Step 2: Convert to fraction form
    608,426.79/839,887.51 = 379,097.38/x
  3. Step 3: Cross multiply
    608,426.79x = 839,887.51 × 379,097.38
  4. Step 4: Simplify right side
    608,426.79x = 318,399,153,587.98
  5. Step 5: Solve for x
    x = 318,399,153,587.98/608,426.79
  6. Step 6: Final answer
    x = 523,315.47

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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.