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Finding the Fourth Proportional to 950,999.63, 1,312,379.80 and 521,282.68

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Solution

The fourth proportional to 950,999.63, 1,312,379.80 and 521,282.68 is: 719,370.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    950,999.63 : 1,312,379.80 = 521,282.68 : x
  2. Step 2: Convert to fraction form
    950,999.63/1,312,379.80 = 521,282.68/x
  3. Step 3: Cross multiply
    950,999.63x = 1,312,379.80 × 521,282.68
  4. Step 4: Simplify right side
    950,999.63x = 684,120,854,737.71
  5. Step 5: Solve for x
    x = 684,120,854,737.71/950,999.63
  6. Step 6: Final answer
    x = 719,370.27

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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.