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Finding the Fourth Proportional to 680,788.68, 939,495.36 and 374,893.50

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Solution

The fourth proportional to 680,788.68, 939,495.36 and 374,893.50 is: 517,356.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,788.68 : 939,495.36 = 374,893.50 : x
  2. Step 2: Convert to fraction form
    680,788.68/939,495.36 = 374,893.50/x
  3. Step 3: Cross multiply
    680,788.68x = 939,495.36 × 374,893.50
  4. Step 4: Simplify right side
    680,788.68x = 352,210,703,744.16
  5. Step 5: Solve for x
    x = 352,210,703,744.16/680,788.68
  6. Step 6: Final answer
    x = 517,356.87

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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.