Home / 680,133.70-1,020,200.55-619,480.90

Finding the Fourth Proportional to 680,133.70, 1,020,200.55 and 619,480.90

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Solution

The fourth proportional to 680,133.70, 1,020,200.55 and 619,480.90 is: 929,221.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,133.70 : 1,020,200.55 = 619,480.90 : x
  2. Step 2: Convert to fraction form
    680,133.70/1,020,200.55 = 619,480.90/x
  3. Step 3: Cross multiply
    680,133.70x = 1,020,200.55 × 619,480.90
  4. Step 4: Simplify right side
    680,133.70x = 631,994,754,894.50
  5. Step 5: Solve for x
    x = 631,994,754,894.50/680,133.70
  6. Step 6: Final answer
    x = 929,221.35

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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.