Home / 853,829.80-1,279,059.90-433,407.40

Finding the Fourth Proportional to 853,829.80, 1,279,059.90 and 433,407.40

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Solution

The fourth proportional to 853,829.80, 1,279,059.90 and 433,407.40 is: 649,255.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,829.80 : 1,279,059.90 = 433,407.40 : x
  2. Step 2: Convert to fraction form
    853,829.80/1,279,059.90 = 433,407.40/x
  3. Step 3: Cross multiply
    853,829.80x = 1,279,059.90 × 433,407.40
  4. Step 4: Simplify right side
    853,829.80x = 554,354,025,703.26
  5. Step 5: Solve for x
    x = 554,354,025,703.26/853,829.80
  6. Step 6: Final answer
    x = 649,255.89

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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.