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Finding the Fourth Proportional to 620,745.57, 856,601.30 and 362,646.45

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Solution

The fourth proportional to 620,745.57, 856,601.30 and 362,646.45 is: 500,435.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,745.57 : 856,601.30 = 362,646.45 : x
  2. Step 2: Convert to fraction form
    620,745.57/856,601.30 = 362,646.45/x
  3. Step 3: Cross multiply
    620,745.57x = 856,601.30 × 362,646.45
  4. Step 4: Simplify right side
    620,745.57x = 310,643,418,697.15
  5. Step 5: Solve for x
    x = 310,643,418,697.15/620,745.57
  6. Step 6: Final answer
    x = 500,435.98

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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.