Home / 885,890.74-1,329,029.90-286,912.45

Finding the Fourth Proportional to 885,890.74, 1,329,029.90 and 286,912.45

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Solution

The fourth proportional to 885,890.74, 1,329,029.90 and 286,912.45 is: 430,431.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,890.74 : 1,329,029.90 = 286,912.45 : x
  2. Step 2: Convert to fraction form
    885,890.74/1,329,029.90 = 286,912.45/x
  3. Step 3: Cross multiply
    885,890.74x = 1,329,029.90 × 286,912.45
  4. Step 4: Simplify right side
    885,890.74x = 381,315,224,732.26
  5. Step 5: Solve for x
    x = 381,315,224,732.26/885,890.74
  6. Step 6: Final answer
    x = 430,431.44

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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.