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Finding the Fourth Proportional to 585,511.50, 808,006.42 and 317,239.50

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Solution

The fourth proportional to 585,511.50, 808,006.42 and 317,239.50 is: 437,790.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,511.50 : 808,006.42 = 317,239.50 : x
  2. Step 2: Convert to fraction form
    585,511.50/808,006.42 = 317,239.50/x
  3. Step 3: Cross multiply
    585,511.50x = 808,006.42 × 317,239.50
  4. Step 4: Simplify right side
    585,511.50x = 256,331,552,677.59
  5. Step 5: Solve for x
    x = 256,331,552,677.59/585,511.50
  6. Step 6: Final answer
    x = 437,790.81

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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.