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Finding the Fourth Proportional to 657,292.50, 907,063.65 and 355,486.50

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Solution

The fourth proportional to 657,292.50, 907,063.65 and 355,486.50 is: 490,571.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,292.50 : 907,063.65 = 355,486.50 : x
  2. Step 2: Convert to fraction form
    657,292.50/907,063.65 = 355,486.50/x
  3. Step 3: Cross multiply
    657,292.50x = 907,063.65 × 355,486.50
  4. Step 4: Simplify right side
    657,292.50x = 322,448,882,215.73
  5. Step 5: Solve for x
    x = 322,448,882,215.73/657,292.50
  6. Step 6: Final answer
    x = 490,571.37

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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.