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Finding the Fourth Proportional to 680,876.54, 939,601.95 and 374,946.74

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Solution

The fourth proportional to 680,876.54, 939,601.95 and 374,946.74 is: 517,422.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,876.54 : 939,601.95 = 374,946.74 : x
  2. Step 2: Convert to fraction form
    680,876.54/939,601.95 = 374,946.74/x
  3. Step 3: Cross multiply
    680,876.54x = 939,601.95 × 374,946.74
  4. Step 4: Simplify right side
    680,876.54x = 352,300,688,050.14
  5. Step 5: Solve for x
    x = 352,300,688,050.14/680,876.54
  6. Step 6: Final answer
    x = 517,422.27

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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.