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Finding the Fourth Proportional to 581,907.70, 802,912.27 and 340,143.49

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Solution

The fourth proportional to 581,907.70, 802,912.27 and 340,143.49 is: 469,327.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,907.70 : 802,912.27 = 340,143.49 : x
  2. Step 2: Convert to fraction form
    581,907.70/802,912.27 = 340,143.49/x
  3. Step 3: Cross multiply
    581,907.70x = 802,912.27 × 340,143.49
  4. Step 4: Simplify right side
    581,907.70x = 273,105,381,681.62
  5. Step 5: Solve for x
    x = 273,105,381,681.62/581,907.70
  6. Step 6: Final answer
    x = 469,327.66

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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.