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Finding the Fourth Proportional to 611,705.79, 844,142.72 and 339,762.87

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Solution

The fourth proportional to 611,705.79, 844,142.72 and 339,762.87 is: 468,866.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,705.79 : 844,142.72 = 339,762.87 : x
  2. Step 2: Convert to fraction form
    611,705.79/844,142.72 = 339,762.87/x
  3. Step 3: Cross multiply
    611,705.79x = 844,142.72 × 339,762.87
  4. Step 4: Simplify right side
    611,705.79x = 286,808,351,537.99
  5. Step 5: Solve for x
    x = 286,808,351,537.99/611,705.79
  6. Step 6: Final answer
    x = 468,866.50

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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.