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Finding the Fourth Proportional to 474,386.36, 654,640.65 and 280,804.05

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Solution

The fourth proportional to 474,386.36, 654,640.65 and 280,804.05 is: 387,502.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,386.36 : 654,640.65 = 280,804.05 : x
  2. Step 2: Convert to fraction form
    474,386.36/654,640.65 = 280,804.05/x
  3. Step 3: Cross multiply
    474,386.36x = 654,640.65 × 280,804.05
  4. Step 4: Simplify right side
    474,386.36x = 183,825,745,814.63
  5. Step 5: Solve for x
    x = 183,825,745,814.63/474,386.36
  6. Step 6: Final answer
    x = 387,502.17

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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.