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Finding the Fourth Proportional to 674,396.79, 930,656.57 and 368,466.59

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Solution

The fourth proportional to 674,396.79, 930,656.57 and 368,466.59 is: 508,477.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,396.79 : 930,656.57 = 368,466.59 : x
  2. Step 2: Convert to fraction form
    674,396.79/930,656.57 = 368,466.59/x
  3. Step 3: Cross multiply
    674,396.79x = 930,656.57 × 368,466.59
  4. Step 4: Simplify right side
    674,396.79x = 342,915,846,313.38
  5. Step 5: Solve for x
    x = 342,915,846,313.38/674,396.79
  6. Step 6: Final answer
    x = 508,477.87

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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.