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Finding the Fourth Proportional to 620,894.39, 856,841.97 and 375,875.88

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Solution

The fourth proportional to 620,894.39, 856,841.97 and 375,875.88 is: 518,713.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,894.39 : 856,841.97 = 375,875.88 : x
  2. Step 2: Convert to fraction form
    620,894.39/856,841.97 = 375,875.88/x
  3. Step 3: Cross multiply
    620,894.39x = 856,841.97 × 375,875.88
  4. Step 4: Simplify right side
    620,894.39x = 322,066,229,494.68
  5. Step 5: Solve for x
    x = 322,066,229,494.68/620,894.39
  6. Step 6: Final answer
    x = 518,713.38

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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.