Home / 910,445.30-1,256,506.69-781,809.59

Finding the Fourth Proportional to 910,445.30, 1,256,506.69 and 781,809.59

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Solution

The fourth proportional to 910,445.30, 1,256,506.69 and 781,809.59 is: 1,078,976.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,445.30 : 1,256,506.69 = 781,809.59 : x
  2. Step 2: Convert to fraction form
    910,445.30/1,256,506.69 = 781,809.59/x
  3. Step 3: Cross multiply
    910,445.30x = 1,256,506.69 × 781,809.59
  4. Step 4: Simplify right side
    910,445.30x = 982,348,982,899.31
  5. Step 5: Solve for x
    x = 982,348,982,899.31/910,445.30
  6. Step 6: Final answer
    x = 1,078,976.39

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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.