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Finding the Fourth Proportional to 638,346.10, 880,670.46 and 366,315.70

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Solution

The fourth proportional to 638,346.10, 880,670.46 and 366,315.70 is: 505,373.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,346.10 : 880,670.46 = 366,315.70 : x
  2. Step 2: Convert to fraction form
    638,346.10/880,670.46 = 366,315.70/x
  3. Step 3: Cross multiply
    638,346.10x = 880,670.46 × 366,315.70
  4. Step 4: Simplify right side
    638,346.10x = 322,603,416,024.22
  5. Step 5: Solve for x
    x = 322,603,416,024.22/638,346.10
  6. Step 6: Final answer
    x = 505,373.83

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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.