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Finding the Fourth Proportional to 802,778.80, 1,107,885.96 and 530,368.82

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Solution

The fourth proportional to 802,778.80, 1,107,885.96 and 530,368.82 is: 731,942.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,778.80 : 1,107,885.96 = 530,368.82 : x
  2. Step 2: Convert to fraction form
    802,778.80/1,107,885.96 = 530,368.82/x
  3. Step 3: Cross multiply
    802,778.80x = 1,107,885.96 × 530,368.82
  4. Step 4: Simplify right side
    802,778.80x = 587,588,169,299.77
  5. Step 5: Solve for x
    x = 587,588,169,299.77/802,778.80
  6. Step 6: Final answer
    x = 731,942.81

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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.