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Finding the Fourth Proportional to 660,343.08, 911,264.10 and 373,855.72

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Solution

The fourth proportional to 660,343.08, 911,264.10 and 373,855.72 is: 515,915.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,343.08 : 911,264.10 = 373,855.72 : x
  2. Step 2: Convert to fraction form
    660,343.08/911,264.10 = 373,855.72/x
  3. Step 3: Cross multiply
    660,343.08x = 911,264.10 × 373,855.72
  4. Step 4: Simplify right side
    660,343.08x = 340,681,296,215.65
  5. Step 5: Solve for x
    x = 340,681,296,215.65/660,343.08
  6. Step 6: Final answer
    x = 515,915.60

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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.