Home / 784,712.12-1,174,008.94-687,880.66

Finding the Fourth Proportional to 784,712.12, 1,174,008.94 and 687,880.66

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Solution

The fourth proportional to 784,712.12, 1,174,008.94 and 687,880.66 is: 1,029,139.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,712.12 : 1,174,008.94 = 687,880.66 : x
  2. Step 2: Convert to fraction form
    784,712.12/1,174,008.94 = 687,880.66/x
  3. Step 3: Cross multiply
    784,712.12x = 1,174,008.94 × 687,880.66
  4. Step 4: Simplify right side
    784,712.12x = 807,578,044,493.10
  5. Step 5: Solve for x
    x = 807,578,044,493.10/784,712.12
  6. Step 6: Final answer
    x = 1,029,139.25

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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.