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Finding the Fourth Proportional to 672,657.21, 928,224.77 and 385,975.53

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Solution

The fourth proportional to 672,657.21, 928,224.77 and 385,975.53 is: 532,622.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,657.21 : 928,224.77 = 385,975.53 : x
  2. Step 2: Convert to fraction form
    672,657.21/928,224.77 = 385,975.53/x
  3. Step 3: Cross multiply
    672,657.21x = 928,224.77 × 385,975.53
  4. Step 4: Simplify right side
    672,657.21x = 358,272,045,630.00
  5. Step 5: Solve for x
    x = 358,272,045,630.00/672,657.21
  6. Step 6: Final answer
    x = 532,622.03

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Double scale
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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.