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Finding the Fourth Proportional to 870,969.38, 1,306,640.70 and 302,368.50

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Solution

The fourth proportional to 870,969.38, 1,306,640.70 and 302,368.50 is: 453,617.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,969.38 : 1,306,640.70 = 302,368.50 : x
  2. Step 2: Convert to fraction form
    870,969.38/1,306,640.70 = 302,368.50/x
  3. Step 3: Cross multiply
    870,969.38x = 1,306,640.70 × 302,368.50
  4. Step 4: Simplify right side
    870,969.38x = 395,086,988,497.95
  5. Step 5: Solve for x
    x = 395,086,988,497.95/870,969.38
  6. Step 6: Final answer
    x = 453,617.54

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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.