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Finding the Fourth Proportional to 681,607.61, 940,659.59 and 375,683.57

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Solution

The fourth proportional to 681,607.61, 940,659.59 and 375,683.57 is: 518,465.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,607.61 : 940,659.59 = 375,683.57 : x
  2. Step 2: Convert to fraction form
    681,607.61/940,659.59 = 375,683.57/x
  3. Step 3: Cross multiply
    681,607.61x = 940,659.59 × 375,683.57
  4. Step 4: Simplify right side
    681,607.61x = 353,390,351,047.52
  5. Step 5: Solve for x
    x = 353,390,351,047.52/681,607.61
  6. Step 6: Final answer
    x = 518,465.97

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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.