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Finding the Fourth Proportional to 688,616.40, 950,350.20 and 402,228.72

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Solution

The fourth proportional to 688,616.40, 950,350.20 and 402,228.72 is: 555,110.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,616.40 : 950,350.20 = 402,228.72 : x
  2. Step 2: Convert to fraction form
    688,616.40/950,350.20 = 402,228.72/x
  3. Step 3: Cross multiply
    688,616.40x = 950,350.20 × 402,228.72
  4. Step 4: Simplify right side
    688,616.40x = 382,258,144,497.74
  5. Step 5: Solve for x
    x = 382,258,144,497.74/688,616.40
  6. Step 6: Final answer
    x = 555,110.43

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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.