Home / 985,710.89-1,478,670.17-409,268.72

Finding the Fourth Proportional to 985,710.89, 1,478,670.17 and 409,268.72

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Solution

The fourth proportional to 985,710.89, 1,478,670.17 and 409,268.72 is: 613,946.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,710.89 : 1,478,670.17 = 409,268.72 : x
  2. Step 2: Convert to fraction form
    985,710.89/1,478,670.17 = 409,268.72/x
  3. Step 3: Cross multiply
    985,710.89x = 1,478,670.17 × 409,268.72
  4. Step 4: Simplify right side
    985,710.89x = 605,173,447,778.08
  5. Step 5: Solve for x
    x = 605,173,447,778.08/985,710.89
  6. Step 6: Final answer
    x = 613,946.19

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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.