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Finding the Fourth Proportional to 660,342.08, 911,262.72 and 373,854.72

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Solution

The fourth proportional to 660,342.08, 911,262.72 and 373,854.72 is: 515,914.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,342.08 : 911,262.72 = 373,854.72 : x
  2. Step 2: Convert to fraction form
    660,342.08/911,262.72 = 373,854.72/x
  3. Step 3: Cross multiply
    660,342.08x = 911,262.72 × 373,854.72
  4. Step 4: Simplify right side
    660,342.08x = 340,679,869,032.04
  5. Step 5: Solve for x
    x = 340,679,869,032.04/660,342.08
  6. Step 6: Final answer
    x = 515,914.22

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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.