Home / 820,147.28-1,230,635.84-553,347.05

Finding the Fourth Proportional to 820,147.28, 1,230,635.84 and 553,347.05

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Solution

The fourth proportional to 820,147.28, 1,230,635.84 and 553,347.05 is: 830,300.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,147.28 : 1,230,635.84 = 553,347.05 : x
  2. Step 2: Convert to fraction form
    820,147.28/1,230,635.84 = 553,347.05/x
  3. Step 3: Cross multiply
    820,147.28x = 1,230,635.84 × 553,347.05
  4. Step 4: Simplify right side
    820,147.28x = 680,968,702,768.36
  5. Step 5: Solve for x
    x = 680,968,702,768.36/820,147.28
  6. Step 6: Final answer
    x = 830,300.51

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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.