Home / 810,534.81-1,215,826.83-278,048.16

Finding the Fourth Proportional to 810,534.81, 1,215,826.83 and 278,048.16

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Solution

The fourth proportional to 810,534.81, 1,215,826.83 and 278,048.16 is: 417,080.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,534.81 : 1,215,826.83 = 278,048.16 : x
  2. Step 2: Convert to fraction form
    810,534.81/1,215,826.83 = 278,048.16/x
  3. Step 3: Cross multiply
    810,534.81x = 1,215,826.83 × 278,048.16
  4. Step 4: Simplify right side
    810,534.81x = 338,058,412,960.13
  5. Step 5: Solve for x
    x = 338,058,412,960.13/810,534.81
  6. Step 6: Final answer
    x = 417,080.68

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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.