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Finding the Fourth Proportional to 646,295, 891,656.23 and 374,214.38

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Solution

The fourth proportional to 646,295, 891,656.23 and 374,214.38 is: 516,282.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,295 : 891,656.23 = 374,214.38 : x
  2. Step 2: Convert to fraction form
    646,295/891,656.23 = 374,214.38/x
  3. Step 3: Cross multiply
    646,295x = 891,656.23 × 374,214.38
  4. Step 4: Simplify right side
    646,295x = 333,670,583,282.59
  5. Step 5: Solve for x
    x = 333,670,583,282.59/646,295
  6. Step 6: Final answer
    x = 516,282.17

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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.