Home / 947,853.32-1,308,037.68-518,135.20

Finding the Fourth Proportional to 947,853.32, 1,308,037.68 and 518,135.20

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Solution

The fourth proportional to 947,853.32, 1,308,037.68 and 518,135.20 is: 715,026.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,853.32 : 1,308,037.68 = 518,135.20 : x
  2. Step 2: Convert to fraction form
    947,853.32/1,308,037.68 = 518,135.20/x
  3. Step 3: Cross multiply
    947,853.32x = 1,308,037.68 × 518,135.20
  4. Step 4: Simplify right side
    947,853.32x = 677,740,364,934.34
  5. Step 5: Solve for x
    x = 677,740,364,934.34/947,853.32
  6. Step 6: Final answer
    x = 715,026.63

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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.