Home / 817,742.26-1,128,484.38-455,158.32

Finding the Fourth Proportional to 817,742.26, 1,128,484.38 and 455,158.32

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Solution

The fourth proportional to 817,742.26, 1,128,484.38 and 455,158.32 is: 628,118.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,742.26 : 1,128,484.38 = 455,158.32 : x
  2. Step 2: Convert to fraction form
    817,742.26/1,128,484.38 = 455,158.32/x
  3. Step 3: Cross multiply
    817,742.26x = 1,128,484.38 × 455,158.32
  4. Step 4: Simplify right side
    817,742.26x = 513,639,054,547.04
  5. Step 5: Solve for x
    x = 513,639,054,547.04/817,742.26
  6. Step 6: Final answer
    x = 628,118.52

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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.