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Finding the Fourth Proportional to 423,690.68, 637,826.63 and 385,982.30

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Solution

The fourth proportional to 423,690.68, 637,826.63 and 385,982.30 is: 581,060.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,690.68 : 637,826.63 = 385,982.30 : x
  2. Step 2: Convert to fraction form
    423,690.68/637,826.63 = 385,982.30/x
  3. Step 3: Cross multiply
    423,690.68x = 637,826.63 × 385,982.30
  4. Step 4: Simplify right side
    423,690.68x = 246,189,789,313.30
  5. Step 5: Solve for x
    x = 246,189,789,313.30/423,690.68
  6. Step 6: Final answer
    x = 581,060.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.