Home / 830,082.80-1,245,124.20-690,114.80

Finding the Fourth Proportional to 830,082.80, 1,245,124.20 and 690,114.80

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Solution

The fourth proportional to 830,082.80, 1,245,124.20 and 690,114.80 is: 1,035,172.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,082.80 : 1,245,124.20 = 690,114.80 : x
  2. Step 2: Convert to fraction form
    830,082.80/1,245,124.20 = 690,114.80/x
  3. Step 3: Cross multiply
    830,082.80x = 1,245,124.20 × 690,114.80
  4. Step 4: Simplify right side
    830,082.80x = 859,278,638,258.16
  5. Step 5: Solve for x
    x = 859,278,638,258.16/830,082.80
  6. Step 6: Final answer
    x = 1,035,172.20

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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.