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Finding the Fourth Proportional to 907,649.70, 1,359,400.95 and 534,401.70

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Solution

The fourth proportional to 907,649.70, 1,359,400.95 and 534,401.70 is: 800,381.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,649.70 : 1,359,400.95 = 534,401.70 : x
  2. Step 2: Convert to fraction form
    907,649.70/1,359,400.95 = 534,401.70/x
  3. Step 3: Cross multiply
    907,649.70x = 1,359,400.95 × 534,401.70
  4. Step 4: Simplify right side
    907,649.70x = 726,466,178,661.62
  5. Step 5: Solve for x
    x = 726,466,178,661.62/907,649.70
  6. Step 6: Final answer
    x = 800,381.67

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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.