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Finding the Fourth Proportional to 486,803.60, 730,480.32 and 262,159.28

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Solution

The fourth proportional to 486,803.60, 730,480.32 and 262,159.28 is: 393,386.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,803.60 : 730,480.32 = 262,159.28 : x
  2. Step 2: Convert to fraction form
    486,803.60/730,480.32 = 262,159.28/x
  3. Step 3: Cross multiply
    486,803.60x = 730,480.32 × 262,159.28
  4. Step 4: Simplify right side
    486,803.60x = 191,502,194,745.37
  5. Step 5: Solve for x
    x = 191,502,194,745.37/486,803.60
  6. Step 6: Final answer
    x = 393,386.97

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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.