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Finding the Fourth Proportional to 688,433, 950,126.64 and 386,627

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Solution

The fourth proportional to 688,433, 950,126.64 and 386,627 is: 533,595.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,433 : 950,126.64 = 386,627 : x
  2. Step 2: Convert to fraction form
    688,433/950,126.64 = 386,627/x
  3. Step 3: Cross multiply
    688,433x = 950,126.64 × 386,627
  4. Step 4: Simplify right side
    688,433x = 367,344,612,443.28
  5. Step 5: Solve for x
    x = 367,344,612,443.28/688,433
  6. Step 6: Final answer
    x = 533,595.30

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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.