Home / 678,967.76-1,018,434.36-324,232.40

Finding the Fourth Proportional to 678,967.76, 1,018,434.36 and 324,232.40

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Solution

The fourth proportional to 678,967.76, 1,018,434.36 and 324,232.40 is: 486,340.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,967.76 : 1,018,434.36 = 324,232.40 : x
  2. Step 2: Convert to fraction form
    678,967.76/1,018,434.36 = 324,232.40/x
  3. Step 3: Cross multiply
    678,967.76x = 1,018,434.36 × 324,232.40
  4. Step 4: Simplify right side
    678,967.76x = 330,209,416,785.26
  5. Step 5: Solve for x
    x = 330,209,416,785.26/678,967.76
  6. Step 6: Final answer
    x = 486,340.35

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.