Home / 712,803.69-1,069,205.13-665,564.49

Finding the Fourth Proportional to 712,803.69, 1,069,205.13 and 665,564.49

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Solution

The fourth proportional to 712,803.69, 1,069,205.13 and 665,564.49 is: 998,346.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,803.69 : 1,069,205.13 = 665,564.49 : x
  2. Step 2: Convert to fraction form
    712,803.69/1,069,205.13 = 665,564.49/x
  3. Step 3: Cross multiply
    712,803.69x = 1,069,205.13 × 665,564.49
  4. Step 4: Simplify right side
    712,803.69x = 711,624,967,053.83
  5. Step 5: Solve for x
    x = 711,624,967,053.83/712,803.69
  6. Step 6: Final answer
    x = 998,346.36

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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.