Home / 870,023.70-1,305,265.95-308,999.70

Finding the Fourth Proportional to 870,023.70, 1,305,265.95 and 308,999.70

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Solution

The fourth proportional to 870,023.70, 1,305,265.95 and 308,999.70 is: 463,581.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,023.70 : 1,305,265.95 = 308,999.70 : x
  2. Step 2: Convert to fraction form
    870,023.70/1,305,265.95 = 308,999.70/x
  3. Step 3: Cross multiply
    870,023.70x = 1,305,265.95 × 308,999.70
  4. Step 4: Simplify right side
    870,023.70x = 403,326,786,970.22
  5. Step 5: Solve for x
    x = 403,326,786,970.22/870,023.70
  6. Step 6: Final answer
    x = 463,581.38

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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.