Home / 516,010.20-774,015.30-313,931.40

Finding the Fourth Proportional to 516,010.20, 774,015.30 and 313,931.40

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Solution

The fourth proportional to 516,010.20, 774,015.30 and 313,931.40 is: 470,897.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,010.20 : 774,015.30 = 313,931.40 : x
  2. Step 2: Convert to fraction form
    516,010.20/774,015.30 = 313,931.40/x
  3. Step 3: Cross multiply
    516,010.20x = 774,015.30 × 313,931.40
  4. Step 4: Simplify right side
    516,010.20x = 242,987,706,750.42
  5. Step 5: Solve for x
    x = 242,987,706,750.42/516,010.20
  6. Step 6: Final answer
    x = 470,897.10

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.