Home / 813,154.78-1,122,136.86-450,575.47

Finding the Fourth Proportional to 813,154.78, 1,122,136.86 and 450,575.47

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Solution

The fourth proportional to 813,154.78, 1,122,136.86 and 450,575.47 is: 621,784.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,154.78 : 1,122,136.86 = 450,575.47 : x
  2. Step 2: Convert to fraction form
    813,154.78/1,122,136.86 = 450,575.47/x
  3. Step 3: Cross multiply
    813,154.78x = 1,122,136.86 × 450,575.47
  4. Step 4: Simplify right side
    813,154.78x = 505,607,343,098.82
  5. Step 5: Solve for x
    x = 505,607,343,098.82/813,154.78
  6. Step 6: Final answer
    x = 621,784.87

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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.