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Finding the Fourth Proportional to 885,698.40, 1,327,640.40 and 435,727.20

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Solution

The fourth proportional to 885,698.40, 1,327,640.40 and 435,727.20 is: 653,144.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,698.40 : 1,327,640.40 = 435,727.20 : x
  2. Step 2: Convert to fraction form
    885,698.40/1,327,640.40 = 435,727.20/x
  3. Step 3: Cross multiply
    885,698.40x = 1,327,640.40 × 435,727.20
  4. Step 4: Simplify right side
    885,698.40x = 578,489,034,098.88
  5. Step 5: Solve for x
    x = 578,489,034,098.88/885,698.40
  6. Step 6: Final answer
    x = 653,144.49

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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.