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Finding the Fourth Proportional to 649,266.70, 973,900.05 and 425,317.90

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Solution

The fourth proportional to 649,266.70, 973,900.05 and 425,317.90 is: 637,976.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,266.70 : 973,900.05 = 425,317.90 : x
  2. Step 2: Convert to fraction form
    649,266.70/973,900.05 = 425,317.90/x
  3. Step 3: Cross multiply
    649,266.70x = 973,900.05 × 425,317.90
  4. Step 4: Simplify right side
    649,266.70x = 414,217,124,075.90
  5. Step 5: Solve for x
    x = 414,217,124,075.90/649,266.70
  6. Step 6: Final answer
    x = 637,976.85

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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.