Home / 519,931.12-779,924.16-145,983.28

Finding the Fourth Proportional to 519,931.12, 779,924.16 and 145,983.28

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Solution

The fourth proportional to 519,931.12, 779,924.16 and 145,983.28 is: 218,982.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,931.12 : 779,924.16 = 145,983.28 : x
  2. Step 2: Convert to fraction form
    519,931.12/779,924.16 = 145,983.28/x
  3. Step 3: Cross multiply
    519,931.12x = 779,924.16 × 145,983.28
  4. Step 4: Simplify right side
    519,931.12x = 113,855,887,028.05
  5. Step 5: Solve for x
    x = 113,855,887,028.05/519,931.12
  6. Step 6: Final answer
    x = 218,982.64

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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.