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Finding the Fourth Proportional to 620,755.32, 856,614.75 and 362,656.20

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Solution

The fourth proportional to 620,755.32, 856,614.75 and 362,656.20 is: 500,449.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,755.32 : 856,614.75 = 362,656.20 : x
  2. Step 2: Convert to fraction form
    620,755.32/856,614.75 = 362,656.20/x
  3. Step 3: Cross multiply
    620,755.32x = 856,614.75 × 362,656.20
  4. Step 4: Simplify right side
    620,755.32x = 310,656,650,098.95
  5. Step 5: Solve for x
    x = 310,656,650,098.95/620,755.32
  6. Step 6: Final answer
    x = 500,449.44

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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.