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Finding the Fourth Proportional to 656,999.88, 906,333.90 and 424,346.82

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Solution

The fourth proportional to 656,999.88, 906,333.90 and 424,346.82 is: 585,388.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,999.88 : 906,333.90 = 424,346.82 : x
  2. Step 2: Convert to fraction form
    656,999.88/906,333.90 = 424,346.82/x
  3. Step 3: Cross multiply
    656,999.88x = 906,333.90 × 424,346.82
  4. Step 4: Simplify right side
    656,999.88x = 384,599,908,323.20
  5. Step 5: Solve for x
    x = 384,599,908,323.20/656,999.88
  6. Step 6: Final answer
    x = 585,388.10

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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.