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Finding the Fourth Proportional to 517,225.70, 775,838.55 and 307,100.90

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Solution

The fourth proportional to 517,225.70, 775,838.55 and 307,100.90 is: 460,651.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,225.70 : 775,838.55 = 307,100.90 : x
  2. Step 2: Convert to fraction form
    517,225.70/775,838.55 = 307,100.90/x
  3. Step 3: Cross multiply
    517,225.70x = 775,838.55 × 307,100.90
  4. Step 4: Simplify right side
    517,225.70x = 238,260,716,959.70
  5. Step 5: Solve for x
    x = 238,260,716,959.70/517,225.70
  6. Step 6: Final answer
    x = 460,651.35

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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.