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Finding the Fourth Proportional to 611,417.70, 843,758.07 and 339,486.12

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Solution

The fourth proportional to 611,417.70, 843,758.07 and 339,486.12 is: 468,491.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,417.70 : 843,758.07 = 339,486.12 : x
  2. Step 2: Convert to fraction form
    611,417.70/843,758.07 = 339,486.12/x
  3. Step 3: Cross multiply
    611,417.70x = 843,758.07 × 339,486.12
  4. Step 4: Simplify right side
    611,417.70x = 286,444,152,129.92
  5. Step 5: Solve for x
    x = 286,444,152,129.92/611,417.70
  6. Step 6: Final answer
    x = 468,491.76

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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.