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Finding the Fourth Proportional to 620,703.54, 856,543.55 and 362,604.38

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Solution

The fourth proportional to 620,703.54, 856,543.55 and 362,604.38 is: 500,378.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,703.54 : 856,543.55 = 362,604.38 : x
  2. Step 2: Convert to fraction form
    620,703.54/856,543.55 = 362,604.38/x
  3. Step 3: Cross multiply
    620,703.54x = 856,543.55 × 362,604.38
  4. Step 4: Simplify right side
    620,703.54x = 310,586,441,613.07
  5. Step 5: Solve for x
    x = 310,586,441,613.07/620,703.54
  6. Step 6: Final answer
    x = 500,378.07

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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.