Home / 680,943.90-1,021,415.85-345,020.70

Finding the Fourth Proportional to 680,943.90, 1,021,415.85 and 345,020.70

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Solution

The fourth proportional to 680,943.90, 1,021,415.85 and 345,020.70 is: 517,531.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,943.90 : 1,021,415.85 = 345,020.70 : x
  2. Step 2: Convert to fraction form
    680,943.90/1,021,415.85 = 345,020.70/x
  3. Step 3: Cross multiply
    680,943.90x = 1,021,415.85 × 345,020.70
  4. Step 4: Simplify right side
    680,943.90x = 352,409,611,558.10
  5. Step 5: Solve for x
    x = 352,409,611,558.10/680,943.90
  6. Step 6: Final answer
    x = 517,531.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.