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Finding the Fourth Proportional to 609,865, 841,613.70 and 371,401

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Solution

The fourth proportional to 609,865, 841,613.70 and 371,401 is: 512,533.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,865 : 841,613.70 = 371,401 : x
  2. Step 2: Convert to fraction form
    609,865/841,613.70 = 371,401/x
  3. Step 3: Cross multiply
    609,865x = 841,613.70 × 371,401
  4. Step 4: Simplify right side
    609,865x = 312,576,169,793.70
  5. Step 5: Solve for x
    x = 312,576,169,793.70/609,865
  6. Step 6: Final answer
    x = 512,533.38

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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.