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Finding the Fourth Proportional to 680,430.12, 938,833.34 and 571,946.80

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Solution

The fourth proportional to 680,430.12, 938,833.34 and 571,946.80 is: 789,151.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,430.12 : 938,833.34 = 571,946.80 : x
  2. Step 2: Convert to fraction form
    680,430.12/938,833.34 = 571,946.80/x
  3. Step 3: Cross multiply
    680,430.12x = 938,833.34 × 571,946.80
  4. Step 4: Simplify right side
    680,430.12x = 536,962,724,546.31
  5. Step 5: Solve for x
    x = 536,962,724,546.31/680,430.12
  6. Step 6: Final answer
    x = 789,151.90

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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.