Home / 689,792.22-951,903.51-387,985.50

Finding the Fourth Proportional to 689,792.22, 951,903.51 and 387,985.50

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Solution

The fourth proportional to 689,792.22, 951,903.51 and 387,985.50 is: 535,414.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,792.22 : 951,903.51 = 387,985.50 : x
  2. Step 2: Convert to fraction form
    689,792.22/951,903.51 = 387,985.50/x
  3. Step 3: Cross multiply
    689,792.22x = 951,903.51 × 387,985.50
  4. Step 4: Simplify right side
    689,792.22x = 369,324,759,279.11
  5. Step 5: Solve for x
    x = 369,324,759,279.11/689,792.22
  6. Step 6: Final answer
    x = 535,414.50

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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.