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Finding the Fourth Proportional to 609,887, 841,644.12 and 371,423

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Solution

The fourth proportional to 609,887, 841,644.12 and 371,423 is: 512,563.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,887 : 841,644.12 = 371,423 : x
  2. Step 2: Convert to fraction form
    609,887/841,644.12 = 371,423/x
  3. Step 3: Cross multiply
    609,887x = 841,644.12 × 371,423
  4. Step 4: Simplify right side
    609,887x = 312,605,983,982.76
  5. Step 5: Solve for x
    x = 312,605,983,982.76/609,887
  6. Step 6: Final answer
    x = 512,563.78

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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.