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Finding the Fourth Proportional to 547,600.70, 821,401.05 and 358,643.90

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Solution

The fourth proportional to 547,600.70, 821,401.05 and 358,643.90 is: 537,965.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,600.70 : 821,401.05 = 358,643.90 : x
  2. Step 2: Convert to fraction form
    547,600.70/821,401.05 = 358,643.90/x
  3. Step 3: Cross multiply
    547,600.70x = 821,401.05 × 358,643.90
  4. Step 4: Simplify right side
    547,600.70x = 294,590,476,036.10
  5. Step 5: Solve for x
    x = 294,590,476,036.10/547,600.70
  6. Step 6: Final answer
    x = 537,965.85

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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.