Home / 836,394.48-1,255,222.64-387,430.34

Finding the Fourth Proportional to 836,394.48, 1,255,222.64 and 387,430.34

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Solution

The fourth proportional to 836,394.48, 1,255,222.64 and 387,430.34 is: 581,437.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,394.48 : 1,255,222.64 = 387,430.34 : x
  2. Step 2: Convert to fraction form
    836,394.48/1,255,222.64 = 387,430.34/x
  3. Step 3: Cross multiply
    836,394.48x = 1,255,222.64 × 387,430.34
  4. Step 4: Simplify right side
    836,394.48x = 486,311,328,883.36
  5. Step 5: Solve for x
    x = 486,311,328,883.36/836,394.48
  6. Step 6: Final answer
    x = 581,437.76

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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.