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Finding the Fourth Proportional to 674,389.49, 930,646.64 and 368,459.30

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Solution

The fourth proportional to 674,389.49, 930,646.64 and 368,459.30 is: 508,467.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,389.49 : 930,646.64 = 368,459.30 : x
  2. Step 2: Convert to fraction form
    674,389.49/930,646.64 = 368,459.30/x
  3. Step 3: Cross multiply
    674,389.49x = 930,646.64 × 368,459.30
  4. Step 4: Simplify right side
    674,389.49x = 342,905,407,679.46
  5. Step 5: Solve for x
    x = 342,905,407,679.46/674,389.49
  6. Step 6: Final answer
    x = 508,467.90

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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.