Home / 688,716.40-1,031,033.40-512,006.80

Finding the Fourth Proportional to 688,716.40, 1,031,033.40 and 512,006.80

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Solution

The fourth proportional to 688,716.40, 1,031,033.40 and 512,006.80 is: 766,492.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,716.40 : 1,031,033.40 = 512,006.80 : x
  2. Step 2: Convert to fraction form
    688,716.40/1,031,033.40 = 512,006.80/x
  3. Step 3: Cross multiply
    688,716.40x = 1,031,033.40 × 512,006.80
  4. Step 4: Simplify right side
    688,716.40x = 527,896,111,827.12
  5. Step 5: Solve for x
    x = 527,896,111,827.12/688,716.40
  6. Step 6: Final answer
    x = 766,492.73

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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.