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Finding the Fourth Proportional to 485,455.77, 669,937.77 and 270,572.77

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Solution

The fourth proportional to 485,455.77, 669,937.77 and 270,572.77 is: 373,395.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,455.77 : 669,937.77 = 270,572.77 : x
  2. Step 2: Convert to fraction form
    485,455.77/669,937.77 = 270,572.77/x
  3. Step 3: Cross multiply
    485,455.77x = 669,937.77 × 270,572.77
  4. Step 4: Simplify right side
    485,455.77x = 181,266,917,309.12
  5. Step 5: Solve for x
    x = 181,266,917,309.12/485,455.77
  6. Step 6: Final answer
    x = 373,395.33

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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.