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Finding the Fourth Proportional to 487,080, 730,786.32 and 262,463.76

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Solution

The fourth proportional to 487,080, 730,786.32 and 262,463.76 is: 393,785.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,080 : 730,786.32 = 262,463.76 : x
  2. Step 2: Convert to fraction form
    487,080/730,786.32 = 262,463.76/x
  3. Step 3: Cross multiply
    487,080x = 730,786.32 × 262,463.76
  4. Step 4: Simplify right side
    487,080x = 191,804,925,303.76
  5. Step 5: Solve for x
    x = 191,804,925,303.76/487,080
  6. Step 6: Final answer
    x = 393,785.26

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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.