Home / 648,724.80-972,212.40-434,884.80

Finding the Fourth Proportional to 648,724.80, 972,212.40 and 434,884.80

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Solution

The fourth proportional to 648,724.80, 972,212.40 and 434,884.80 is: 651,740.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,724.80 : 972,212.40 = 434,884.80 : x
  2. Step 2: Convert to fraction form
    648,724.80/972,212.40 = 434,884.80/x
  3. Step 3: Cross multiply
    648,724.80x = 972,212.40 × 434,884.80
  4. Step 4: Simplify right side
    648,724.80x = 422,800,395,131.52
  5. Step 5: Solve for x
    x = 422,800,395,131.52/648,724.80
  6. Step 6: Final answer
    x = 651,740.76

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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.