Home / 440,457.78-607,821.55-256,684.65

Finding the Fourth Proportional to 440,457.78, 607,821.55 and 256,684.65

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Solution

The fourth proportional to 440,457.78, 607,821.55 and 256,684.65 is: 354,218.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,457.78 : 607,821.55 = 256,684.65 : x
  2. Step 2: Convert to fraction form
    440,457.78/607,821.55 = 256,684.65/x
  3. Step 3: Cross multiply
    440,457.78x = 607,821.55 × 256,684.65
  4. Step 4: Simplify right side
    440,457.78x = 156,018,460,347.02
  5. Step 5: Solve for x
    x = 156,018,460,347.02/440,457.78
  6. Step 6: Final answer
    x = 354,218.87

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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.