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Finding the Fourth Proportional to 658,817.34, 909,169.11 and 357,011.34

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Solution

The fourth proportional to 658,817.34, 909,169.11 and 357,011.34 is: 492,676.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,817.34 : 909,169.11 = 357,011.34 : x
  2. Step 2: Convert to fraction form
    658,817.34/909,169.11 = 357,011.34/x
  3. Step 3: Cross multiply
    658,817.34x = 909,169.11 × 357,011.34
  4. Step 4: Simplify right side
    658,817.34x = 324,583,682,247.71
  5. Step 5: Solve for x
    x = 324,583,682,247.71/658,817.34
  6. Step 6: Final answer
    x = 492,676.29

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.