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Finding the Fourth Proportional to 680,681.40, 939,362.22 and 374,790.12

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Solution

The fourth proportional to 680,681.40, 939,362.22 and 374,790.12 is: 517,222.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,681.40 : 939,362.22 = 374,790.12 : x
  2. Step 2: Convert to fraction form
    680,681.40/939,362.22 = 374,790.12/x
  3. Step 3: Cross multiply
    680,681.40x = 939,362.22 × 374,790.12
  4. Step 4: Simplify right side
    680,681.40x = 352,063,679,157.27
  5. Step 5: Solve for x
    x = 352,063,679,157.27/680,681.40
  6. Step 6: Final answer
    x = 517,222.42

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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.