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Finding the Fourth Proportional to 872,068.42, 1,203,183.95 and 509,230.54

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Solution

The fourth proportional to 872,068.42, 1,203,183.95 and 509,230.54 is: 702,580.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,068.42 : 1,203,183.95 = 509,230.54 : x
  2. Step 2: Convert to fraction form
    872,068.42/1,203,183.95 = 509,230.54/x
  3. Step 3: Cross multiply
    872,068.42x = 1,203,183.95 × 509,230.54
  4. Step 4: Simplify right side
    872,068.42x = 612,698,007,023.72
  5. Step 5: Solve for x
    x = 612,698,007,023.72/872,068.42
  6. Step 6: Final answer
    x = 702,580.20

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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.