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Finding the Fourth Proportional to 660,192.53, 911,015.47 and 402,040.87

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Solution

The fourth proportional to 660,192.53, 911,015.47 and 402,040.87 is: 554,785.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,192.53 : 911,015.47 = 402,040.87 : x
  2. Step 2: Convert to fraction form
    660,192.53/911,015.47 = 402,040.87/x
  3. Step 3: Cross multiply
    660,192.53x = 911,015.47 × 402,040.87
  4. Step 4: Simplify right side
    660,192.53x = 366,265,447,587.18
  5. Step 5: Solve for x
    x = 366,265,447,587.18/660,192.53
  6. Step 6: Final answer
    x = 554,785.81

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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.