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Finding the Fourth Proportional to 558,991.80, 838,487.70 and 530,123.40

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Solution

The fourth proportional to 558,991.80, 838,487.70 and 530,123.40 is: 795,185.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,991.80 : 838,487.70 = 530,123.40 : x
  2. Step 2: Convert to fraction form
    558,991.80/838,487.70 = 530,123.40/x
  3. Step 3: Cross multiply
    558,991.80x = 838,487.70 × 530,123.40
  4. Step 4: Simplify right side
    558,991.80x = 444,501,950,382.18
  5. Step 5: Solve for x
    x = 444,501,950,382.18/558,991.80
  6. Step 6: Final answer
    x = 795,185.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.