Home / 487,362,331.78-730,971,589.07-142,223,288.74

Finding the Fourth Proportional to 487,362,331.78, 730,971,589.07 and 142,223,288.74

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Solution

The fourth proportional to 487,362,331.78, 730,971,589.07 and 142,223,288.74 is: 213,313,948.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,362,331.78 : 730,971,589.07 = 142,223,288.74 : x
  2. Step 2: Convert to fraction form
    487,362,331.78/730,971,589.07 = 142,223,288.74/x
  3. Step 3: Cross multiply
    487,362,331.78x = 730,971,589.07 × 142,223,288.74
  4. Step 4: Simplify right side
    487,362,331.78x = 103,961,183,371,567,376
  5. Step 5: Solve for x
    x = 103,961,183,371,567,376/487,362,331.78
  6. Step 6: Final answer
    x = 213,313,948.56

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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.