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Finding the Fourth Proportional to 689,192.97, 950,946.93 and 402,657.71

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Solution

The fourth proportional to 689,192.97, 950,946.93 and 402,657.71 is: 555,586.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,192.97 : 950,946.93 = 402,657.71 : x
  2. Step 2: Convert to fraction form
    689,192.97/950,946.93 = 402,657.71/x
  3. Step 3: Cross multiply
    689,192.97x = 950,946.93 × 402,657.71
  4. Step 4: Simplify right side
    689,192.97x = 382,906,108,410.60
  5. Step 5: Solve for x
    x = 382,906,108,410.60/689,192.97
  6. Step 6: Final answer
    x = 555,586.21

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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.