Home / 855,389.28-1,180,305.69-492,742.32

Finding the Fourth Proportional to 855,389.28, 1,180,305.69 and 492,742.32

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Solution

The fourth proportional to 855,389.28, 1,180,305.69 and 492,742.32 is: 679,908.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,389.28 : 1,180,305.69 = 492,742.32 : x
  2. Step 2: Convert to fraction form
    855,389.28/1,180,305.69 = 492,742.32/x
  3. Step 3: Cross multiply
    855,389.28x = 1,180,305.69 × 492,742.32
  4. Step 4: Simplify right side
    855,389.28x = 581,586,563,999.80
  5. Step 5: Solve for x
    x = 581,586,563,999.80/855,389.28
  6. Step 6: Final answer
    x = 679,908.64

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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.