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Finding the Fourth Proportional to 587,139.37, 810,238.58 and 345,437.49

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Solution

The fourth proportional to 587,139.37, 810,238.58 and 345,437.49 is: 476,695.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,139.37 : 810,238.58 = 345,437.49 : x
  2. Step 2: Convert to fraction form
    587,139.37/810,238.58 = 345,437.49/x
  3. Step 3: Cross multiply
    587,139.37x = 810,238.58 × 345,437.49
  4. Step 4: Simplify right side
    587,139.37x = 279,886,778,603.89
  5. Step 5: Solve for x
    x = 279,886,778,603.89/587,139.37
  6. Step 6: Final answer
    x = 476,695.64

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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.