Home / 678,314.52-936,085.02-372,419.10

Finding the Fourth Proportional to 678,314.52, 936,085.02 and 372,419.10

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Solution

The fourth proportional to 678,314.52, 936,085.02 and 372,419.10 is: 513,944.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,314.52 : 936,085.02 = 372,419.10 : x
  2. Step 2: Convert to fraction form
    678,314.52/936,085.02 = 372,419.10/x
  3. Step 3: Cross multiply
    678,314.52x = 936,085.02 × 372,419.10
  4. Step 4: Simplify right side
    678,314.52x = 348,615,940,671.88
  5. Step 5: Solve for x
    x = 348,615,940,671.88/678,314.52
  6. Step 6: Final answer
    x = 513,944.39

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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.