Home / 1,338,478.63-2,007,422.70-391,923.16

Finding the Fourth Proportional to 1,338,478.63, 2,007,422.70 and 391,923.16

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Solution

The fourth proportional to 1,338,478.63, 2,007,422.70 and 391,923.16 is: 587,798.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338,478.63 : 2,007,422.70 = 391,923.16 : x
  2. Step 2: Convert to fraction form
    1,338,478.63/2,007,422.70 = 391,923.16/x
  3. Step 3: Cross multiply
    1,338,478.63x = 2,007,422.70 × 391,923.16
  4. Step 4: Simplify right side
    1,338,478.63x = 786,755,441,551.46
  5. Step 5: Solve for x
    x = 786,755,441,551.46/1,338,478.63
  6. Step 6: Final answer
    x = 587,798.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.