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Finding the Fourth Proportional to 722,316.96, 997,290 and 450,491.04

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Solution

The fourth proportional to 722,316.96, 997,290 and 450,491.04 is: 621,984.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,316.96 : 997,290 = 450,491.04 : x
  2. Step 2: Convert to fraction form
    722,316.96/997,290 = 450,491.04/x
  3. Step 3: Cross multiply
    722,316.96x = 997,290 × 450,491.04
  4. Step 4: Simplify right side
    722,316.96x = 449,270,209,281.60
  5. Step 5: Solve for x
    x = 449,270,209,281.60/722,316.96
  6. Step 6: Final answer
    x = 621,984.85

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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.