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Finding the Fourth Proportional to 680,805.81, 939,503.61 and 374,875.70

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Solution

The fourth proportional to 680,805.81, 939,503.61 and 374,875.70 is: 517,323.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,805.81 : 939,503.61 = 374,875.70 : x
  2. Step 2: Convert to fraction form
    680,805.81/939,503.61 = 374,875.70/x
  3. Step 3: Cross multiply
    680,805.81x = 939,503.61 × 374,875.70
  4. Step 4: Simplify right side
    680,805.81x = 352,197,068,753.76
  5. Step 5: Solve for x
    x = 352,197,068,753.76/680,805.81
  6. Step 6: Final answer
    x = 517,323.83

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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.