Home / 853,643.48-1,280,300.91-398,109.66

Finding the Fourth Proportional to 853,643.48, 1,280,300.91 and 398,109.66

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Solution

The fourth proportional to 853,643.48, 1,280,300.91 and 398,109.66 is: 597,087.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,643.48 : 1,280,300.91 = 398,109.66 : x
  2. Step 2: Convert to fraction form
    853,643.48/1,280,300.91 = 398,109.66/x
  3. Step 3: Cross multiply
    853,643.48x = 1,280,300.91 × 398,109.66
  4. Step 4: Simplify right side
    853,643.48x = 509,700,159,977.79
  5. Step 5: Solve for x
    x = 509,700,159,977.79/853,643.48
  6. Step 6: Final answer
    x = 597,087.86

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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.