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Finding the Fourth Proportional to 656,838.74, 906,447.48 and 384,841.52

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Solution

The fourth proportional to 656,838.74, 906,447.48 and 384,841.52 is: 531,087.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,838.74 : 906,447.48 = 384,841.52 : x
  2. Step 2: Convert to fraction form
    656,838.74/906,447.48 = 384,841.52/x
  3. Step 3: Cross multiply
    656,838.74x = 906,447.48 × 384,841.52
  4. Step 4: Simplify right side
    656,838.74x = 348,838,626,003.37
  5. Step 5: Solve for x
    x = 348,838,626,003.37/656,838.74
  6. Step 6: Final answer
    x = 531,087.17

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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.