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Finding the Fourth Proportional to 660,159.56, 911,041.90 and 373,673.50

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Solution

The fourth proportional to 660,159.56, 911,041.90 and 373,673.50 is: 515,681.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,159.56 : 911,041.90 = 373,673.50 : x
  2. Step 2: Convert to fraction form
    660,159.56/911,041.90 = 373,673.50/x
  3. Step 3: Cross multiply
    660,159.56x = 911,041.90 × 373,673.50
  4. Step 4: Simplify right side
    660,159.56x = 340,432,215,419.65
  5. Step 5: Solve for x
    x = 340,432,215,419.65/660,159.56
  6. Step 6: Final answer
    x = 515,681.72

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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.