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Finding the Fourth Proportional to 870,602.77, 1,305,641.71 and 309,603.25

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Solution

The fourth proportional to 870,602.77, 1,305,641.71 and 309,603.25 is: 464,311.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,602.77 : 1,305,641.71 = 309,603.25 : x
  2. Step 2: Convert to fraction form
    870,602.77/1,305,641.71 = 309,603.25/x
  3. Step 3: Cross multiply
    870,602.77x = 1,305,641.71 × 309,603.25
  4. Step 4: Simplify right side
    870,602.77x = 404,230,916,751.56
  5. Step 5: Solve for x
    x = 404,230,916,751.56/870,602.77
  6. Step 6: Final answer
    x = 464,311.54

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1.5x scale

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.