Home / 678,366.03-936,159.75-388,004.13

Finding the Fourth Proportional to 678,366.03, 936,159.75 and 388,004.13

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Solution

The fourth proportional to 678,366.03, 936,159.75 and 388,004.13 is: 535,454.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,366.03 : 936,159.75 = 388,004.13 : x
  2. Step 2: Convert to fraction form
    678,366.03/936,159.75 = 388,004.13/x
  3. Step 3: Cross multiply
    678,366.03x = 936,159.75 × 388,004.13
  4. Step 4: Simplify right side
    678,366.03x = 363,233,849,339.77
  5. Step 5: Solve for x
    x = 363,233,849,339.77/678,366.03
  6. Step 6: Final answer
    x = 535,454.07

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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.