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Finding the Fourth Proportional to 553,373.70, 830,060.55 and 343,421.70

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Solution

The fourth proportional to 553,373.70, 830,060.55 and 343,421.70 is: 515,132.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,373.70 : 830,060.55 = 343,421.70 : x
  2. Step 2: Convert to fraction form
    553,373.70/830,060.55 = 343,421.70/x
  3. Step 3: Cross multiply
    553,373.70x = 830,060.55 × 343,421.70
  4. Step 4: Simplify right side
    553,373.70x = 285,060,805,183.94
  5. Step 5: Solve for x
    x = 285,060,805,183.94/553,373.70
  6. Step 6: Final answer
    x = 515,132.55

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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.