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Finding the Fourth Proportional to 657,362.48, 907,159.56 and 355,555.76

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Solution

The fourth proportional to 657,362.48, 907,159.56 and 355,555.76 is: 490,666.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,362.48 : 907,159.56 = 355,555.76 : x
  2. Step 2: Convert to fraction form
    657,362.48/907,159.56 = 355,555.76/x
  3. Step 3: Cross multiply
    657,362.48x = 907,159.56 × 355,555.76
  4. Step 4: Simplify right side
    657,362.48x = 322,545,806,797.07
  5. Step 5: Solve for x
    x = 322,545,806,797.07/657,362.48
  6. Step 6: Final answer
    x = 490,666.59

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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.