Home / 818,119.12-1,129,001.55-455,547.34

Finding the Fourth Proportional to 818,119.12, 1,129,001.55 and 455,547.34

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Solution

The fourth proportional to 818,119.12, 1,129,001.55 and 455,547.34 is: 628,653.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,119.12 : 1,129,001.55 = 455,547.34 : x
  2. Step 2: Convert to fraction form
    818,119.12/1,129,001.55 = 455,547.34/x
  3. Step 3: Cross multiply
    818,119.12x = 1,129,001.55 × 455,547.34
  4. Step 4: Simplify right side
    818,119.12x = 514,313,652,958.38
  5. Step 5: Solve for x
    x = 514,313,652,958.38/818,119.12
  6. Step 6: Final answer
    x = 628,653.75

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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.