Home / 858,243.60-1,285,615.80-437,756.40

Finding the Fourth Proportional to 858,243.60, 1,285,615.80 and 437,756.40

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Solution

The fourth proportional to 858,243.60, 1,285,615.80 and 437,756.40 is: 655,742.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,243.60 : 1,285,615.80 = 437,756.40 : x
  2. Step 2: Convert to fraction form
    858,243.60/1,285,615.80 = 437,756.40/x
  3. Step 3: Cross multiply
    858,243.60x = 1,285,615.80 × 437,756.40
  4. Step 4: Simplify right side
    858,243.60x = 562,786,544,391.12
  5. Step 5: Solve for x
    x = 562,786,544,391.12/858,243.60
  6. Step 6: Final answer
    x = 655,742.20

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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.