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Finding the Fourth Proportional to 5,215,337.70, 7,823,006.55 and 4,428,017.70

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Solution

The fourth proportional to 5,215,337.70, 7,823,006.55 and 4,428,017.70 is: 6,642,026.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215,337.70 : 7,823,006.55 = 4,428,017.70 : x
  2. Step 2: Convert to fraction form
    5,215,337.70/7,823,006.55 = 4,428,017.70/x
  3. Step 3: Cross multiply
    5,215,337.70x = 7,823,006.55 × 4,428,017.70
  4. Step 4: Simplify right side
    5,215,337.70x = 34,640,411,470,615.94
  5. Step 5: Solve for x
    x = 34,640,411,470,615.94/5,215,337.70
  6. Step 6: Final answer
    x = 6,642,026.55

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Double scale
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Similar ratio
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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.