Home / 910,690.08-1,256,862.51-518,318.44

Finding the Fourth Proportional to 910,690.08, 1,256,862.51 and 518,318.44

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Solution

The fourth proportional to 910,690.08, 1,256,862.51 and 518,318.44 is: 715,342.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,690.08 : 1,256,862.51 = 518,318.44 : x
  2. Step 2: Convert to fraction form
    910,690.08/1,256,862.51 = 518,318.44/x
  3. Step 3: Cross multiply
    910,690.08x = 1,256,862.51 × 518,318.44
  4. Step 4: Simplify right side
    910,690.08x = 651,455,009,193.37
  5. Step 5: Solve for x
    x = 651,455,009,193.37/910,690.08
  6. Step 6: Final answer
    x = 715,342.16

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Double scale
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Similar ratio
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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.