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Finding the Fourth Proportional to 751,040, 1,036,435.20 and 411,520.40

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Solution

The fourth proportional to 751,040, 1,036,435.20 and 411,520.40 is: 567,898.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    751,040 : 1,036,435.20 = 411,520.40 : x
  2. Step 2: Convert to fraction form
    751,040/1,036,435.20 = 411,520.40/x
  3. Step 3: Cross multiply
    751,040x = 1,036,435.20 × 411,520.40
  4. Step 4: Simplify right side
    751,040x = 426,514,228,078.08
  5. Step 5: Solve for x
    x = 426,514,228,078.08/751,040
  6. Step 6: Final answer
    x = 567,898.15

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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.