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Finding the Fourth Proportional to 674,457, 930,721.68 and 368,528.49

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Solution

The fourth proportional to 674,457, 930,721.68 and 368,528.49 is: 508,553.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,457 : 930,721.68 = 368,528.49 : x
  2. Step 2: Convert to fraction form
    674,457/930,721.68 = 368,528.49/x
  3. Step 3: Cross multiply
    674,457x = 930,721.68 × 368,528.49
  4. Step 4: Simplify right side
    674,457x = 342,997,455,340.66
  5. Step 5: Solve for x
    x = 342,997,455,340.66/674,457
  6. Step 6: Final answer
    x = 508,553.48

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1.5x scale

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.