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Finding the Fourth Proportional to 674,640.64, 930,995.52 and 372,828.16

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Solution

The fourth proportional to 674,640.64, 930,995.52 and 372,828.16 is: 514,498.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,640.64 : 930,995.52 = 372,828.16 : x
  2. Step 2: Convert to fraction form
    674,640.64/930,995.52 = 372,828.16/x
  3. Step 3: Cross multiply
    674,640.64x = 930,995.52 × 372,828.16
  4. Step 4: Simplify right side
    674,640.64x = 347,101,346,689.84
  5. Step 5: Solve for x
    x = 347,101,346,689.84/674,640.64
  6. Step 6: Final answer
    x = 514,498.13

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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.