Home / 910,439.90-1,256,910.30-547,952.78

Finding the Fourth Proportional to 910,439.90, 1,256,910.30 and 547,952.78

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Solution

The fourth proportional to 910,439.90, 1,256,910.30 and 547,952.78 is: 756,477.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,439.90 : 1,256,910.30 = 547,952.78 : x
  2. Step 2: Convert to fraction form
    910,439.90/1,256,910.30 = 547,952.78/x
  3. Step 3: Cross multiply
    910,439.90x = 1,256,910.30 × 547,952.78
  4. Step 4: Simplify right side
    910,439.90x = 688,727,493,095.63
  5. Step 5: Solve for x
    x = 688,727,493,095.63/910,439.90
  6. Step 6: Final answer
    x = 756,477.71

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1.5x scale

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.