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Finding the Fourth Proportional to 587,138.99, 810,237.98 and 345,437.10

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Solution

The fourth proportional to 587,138.99, 810,237.98 and 345,437.10 is: 476,695.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,138.99 : 810,237.98 = 345,437.10 : x
  2. Step 2: Convert to fraction form
    587,138.99/810,237.98 = 345,437.10/x
  3. Step 3: Cross multiply
    587,138.99x = 810,237.98 × 345,437.10
  4. Step 4: Simplify right side
    587,138.99x = 279,886,256,393.87
  5. Step 5: Solve for x
    x = 279,886,256,393.87/587,138.99
  6. Step 6: Final answer
    x = 476,695.06

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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.