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Finding the Fourth Proportional to 641,808.24, 885,661.60 and 351,364.20

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Solution

The fourth proportional to 641,808.24, 885,661.60 and 351,364.20 is: 484,864.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,808.24 : 885,661.60 = 351,364.20 : x
  2. Step 2: Convert to fraction form
    641,808.24/885,661.60 = 351,364.20/x
  3. Step 3: Cross multiply
    641,808.24x = 885,661.60 × 351,364.20
  4. Step 4: Simplify right side
    641,808.24x = 311,189,779,554.72
  5. Step 5: Solve for x
    x = 311,189,779,554.72/641,808.24
  6. Step 6: Final answer
    x = 484,864.11

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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.