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Finding the Fourth Proportional to 587,405.28, 810,603.54 and 345,702.09

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Solution

The fourth proportional to 587,405.28, 810,603.54 and 345,702.09 is: 477,059.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,405.28 : 810,603.54 = 345,702.09 : x
  2. Step 2: Convert to fraction form
    587,405.28/810,603.54 = 345,702.09/x
  3. Step 3: Cross multiply
    587,405.28x = 810,603.54 × 345,702.09
  4. Step 4: Simplify right side
    587,405.28x = 280,227,337,939.40
  5. Step 5: Solve for x
    x = 280,227,337,939.40/587,405.28
  6. Step 6: Final answer
    x = 477,059.62

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1.5x scale

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.