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Finding the Fourth Proportional to 688,701.88, 950,403.54 and 386,895.88

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Solution

The fourth proportional to 688,701.88, 950,403.54 and 386,895.88 is: 533,913.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,701.88 : 950,403.54 = 386,895.88 : x
  2. Step 2: Convert to fraction form
    688,701.88/950,403.54 = 386,895.88/x
  3. Step 3: Cross multiply
    688,701.88x = 950,403.54 × 386,895.88
  4. Step 4: Simplify right side
    688,701.88x = 367,707,213,963.42
  5. Step 5: Solve for x
    x = 367,707,213,963.42/688,701.88
  6. Step 6: Final answer
    x = 533,913.47

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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.