Home / 727,646.76-1,004,153.09-405,357.66

Finding the Fourth Proportional to 727,646.76, 1,004,153.09 and 405,357.66

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Solution

The fourth proportional to 727,646.76, 1,004,153.09 and 405,357.66 is: 559,393.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,646.76 : 1,004,153.09 = 405,357.66 : x
  2. Step 2: Convert to fraction form
    727,646.76/1,004,153.09 = 405,357.66/x
  3. Step 3: Cross multiply
    727,646.76x = 1,004,153.09 × 405,357.66
  4. Step 4: Simplify right side
    727,646.76x = 407,041,144,817.38
  5. Step 5: Solve for x
    x = 407,041,144,817.38/727,646.76
  6. Step 6: Final answer
    x = 559,393.88

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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.