Home / 659,140.02-909,620.40-387,219.38

Finding the Fourth Proportional to 659,140.02, 909,620.40 and 387,219.38

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Solution

The fourth proportional to 659,140.02, 909,620.40 and 387,219.38 is: 534,366.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,140.02 : 909,620.40 = 387,219.38 : x
  2. Step 2: Convert to fraction form
    659,140.02/909,620.40 = 387,219.38/x
  3. Step 3: Cross multiply
    659,140.02x = 909,620.40 × 387,219.38
  4. Step 4: Simplify right side
    659,140.02x = 352,222,647,323.35
  5. Step 5: Solve for x
    x = 352,222,647,323.35/659,140.02
  6. Step 6: Final answer
    x = 534,366.96

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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.