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Finding the Fourth Proportional to 674,564.72, 930,899.64 and 372,758.72

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Solution

The fourth proportional to 674,564.72, 930,899.64 and 372,758.72 is: 514,407.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,564.72 : 930,899.64 = 372,758.72 : x
  2. Step 2: Convert to fraction form
    674,564.72/930,899.64 = 372,758.72/x
  3. Step 3: Cross multiply
    674,564.72x = 930,899.64 × 372,758.72
  4. Step 4: Simplify right side
    674,564.72x = 347,000,958,254.86
  5. Step 5: Solve for x
    x = 347,000,958,254.86/674,564.72
  6. Step 6: Final answer
    x = 514,407.21

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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.