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Finding the Fourth Proportional to 553,430.20, 830,145.30 and 488,111.80

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Solution

The fourth proportional to 553,430.20, 830,145.30 and 488,111.80 is: 732,167.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,430.20 : 830,145.30 = 488,111.80 : x
  2. Step 2: Convert to fraction form
    553,430.20/830,145.30 = 488,111.80/x
  3. Step 3: Cross multiply
    553,430.20x = 830,145.30 × 488,111.80
  4. Step 4: Simplify right side
    553,430.20x = 405,203,716,644.54
  5. Step 5: Solve for x
    x = 405,203,716,644.54/553,430.20
  6. Step 6: Final answer
    x = 732,167.70

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Similar ratio
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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.