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Finding the Fourth Proportional to 530,999.40, 795,332.70 and 320,269.80

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Solution

The fourth proportional to 530,999.40, 795,332.70 and 320,269.80 is: 479,701.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,999.40 : 795,332.70 = 320,269.80 : x
  2. Step 2: Convert to fraction form
    530,999.40/795,332.70 = 320,269.80/x
  3. Step 3: Cross multiply
    530,999.40x = 795,332.70 × 320,269.80
  4. Step 4: Simplify right side
    530,999.40x = 254,721,044,762.46
  5. Step 5: Solve for x
    x = 254,721,044,762.46/530,999.40
  6. Step 6: Final answer
    x = 479,701.19

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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.