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Finding the Fourth Proportional to 462,323.70, 693,485.55 and 129,899.70

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Solution

The fourth proportional to 462,323.70, 693,485.55 and 129,899.70 is: 194,849.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,323.70 : 693,485.55 = 129,899.70 : x
  2. Step 2: Convert to fraction form
    462,323.70/693,485.55 = 129,899.70/x
  3. Step 3: Cross multiply
    462,323.70x = 693,485.55 × 129,899.70
  4. Step 4: Simplify right side
    462,323.70x = 90,083,564,899.34
  5. Step 5: Solve for x
    x = 90,083,564,899.34/462,323.70
  6. Step 6: Final answer
    x = 194,849.55

Related Problems

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Half scale
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Double scale
Find fourth proportional to 462,324.70, 693,487.05 and 129,900.70
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.