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Finding the Fourth Proportional to 680,757.78, 939,437.82 and 374,827.80

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Solution

The fourth proportional to 680,757.78, 939,437.82 and 374,827.80 is: 517,258.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,757.78 : 939,437.82 = 374,827.80 : x
  2. Step 2: Convert to fraction form
    680,757.78/939,437.82 = 374,827.80/x
  3. Step 3: Cross multiply
    680,757.78x = 939,437.82 × 374,827.80
  4. Step 4: Simplify right side
    680,757.78x = 352,127,411,307.40
  5. Step 5: Solve for x
    x = 352,127,411,307.40/680,757.78
  6. Step 6: Final answer
    x = 517,258.01

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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.