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Finding the Fourth Proportional to 688,688.35, 950,324.63 and 637,906.21

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Solution

The fourth proportional to 688,688.35, 950,324.63 and 637,906.21 is: 880,250.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,688.35 : 950,324.63 = 637,906.21 : x
  2. Step 2: Convert to fraction form
    688,688.35/950,324.63 = 637,906.21/x
  3. Step 3: Cross multiply
    688,688.35x = 950,324.63 × 637,906.21
  4. Step 4: Simplify right side
    688,688.35x = 606,217,981,894.51
  5. Step 5: Solve for x
    x = 606,217,981,894.51/688,688.35
  6. Step 6: Final answer
    x = 880,250.09

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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.