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Finding the Fourth Proportional to 660,835.76, 911,896.67 and 366,493.91

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Solution

The fourth proportional to 660,835.76, 911,896.67 and 366,493.91 is: 505,730.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,835.76 : 911,896.67 = 366,493.91 : x
  2. Step 2: Convert to fraction form
    660,835.76/911,896.67 = 366,493.91/x
  3. Step 3: Cross multiply
    660,835.76x = 911,896.67 × 366,493.91
  4. Step 4: Simplify right side
    660,835.76x = 334,204,574,271.81
  5. Step 5: Solve for x
    x = 334,204,574,271.81/660,835.76
  6. Step 6: Final answer
    x = 505,730.16

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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.