Home / 820,810.56-1,133,189.76-625,686.72

Finding the Fourth Proportional to 820,810.56, 1,133,189.76 and 625,686.72

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Solution

The fourth proportional to 820,810.56, 1,133,189.76 and 625,686.72 is: 863,806.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,810.56 : 1,133,189.76 = 625,686.72 : x
  2. Step 2: Convert to fraction form
    820,810.56/1,133,189.76 = 625,686.72/x
  3. Step 3: Cross multiply
    820,810.56x = 1,133,189.76 × 625,686.72
  4. Step 4: Simplify right side
    820,810.56x = 709,021,784,071.99
  5. Step 5: Solve for x
    x = 709,021,784,071.99/820,810.56
  6. Step 6: Final answer
    x = 863,806.85

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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.