Home / 778,469.10-1,073,332.98-640,164.84

Finding the Fourth Proportional to 778,469.10, 1,073,332.98 and 640,164.84

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Solution

The fourth proportional to 778,469.10, 1,073,332.98 and 640,164.84 is: 882,642.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,469.10 : 1,073,332.98 = 640,164.84 : x
  2. Step 2: Convert to fraction form
    778,469.10/1,073,332.98 = 640,164.84/x
  3. Step 3: Cross multiply
    778,469.10x = 1,073,332.98 × 640,164.84
  4. Step 4: Simplify right side
    778,469.10x = 687,110,035,408.42
  5. Step 5: Solve for x
    x = 687,110,035,408.42/778,469.10
  6. Step 6: Final answer
    x = 882,642.66

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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.