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Finding the Fourth Proportional to 680,987.71, 939,751.45 and 375,092.74

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Solution

The fourth proportional to 680,987.71, 939,751.45 and 375,092.74 is: 517,621.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,987.71 : 939,751.45 = 375,092.74 : x
  2. Step 2: Convert to fraction form
    680,987.71/939,751.45 = 375,092.74/x
  3. Step 3: Cross multiply
    680,987.71x = 939,751.45 × 375,092.74
  4. Step 4: Simplify right side
    680,987.71x = 352,493,946,299.47
  5. Step 5: Solve for x
    x = 352,493,946,299.47/680,987.71
  6. Step 6: Final answer
    x = 517,621.60

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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.