Home / 887,861.36-1,225,253.40-485,453.36

Finding the Fourth Proportional to 887,861.36, 1,225,253.40 and 485,453.36

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Solution

The fourth proportional to 887,861.36, 1,225,253.40 and 485,453.36 is: 669,928.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,861.36 : 1,225,253.40 = 485,453.36 : x
  2. Step 2: Convert to fraction form
    887,861.36/1,225,253.40 = 485,453.36/x
  3. Step 3: Cross multiply
    887,861.36x = 1,225,253.40 × 485,453.36
  4. Step 4: Simplify right side
    887,861.36x = 594,803,379,881.42
  5. Step 5: Solve for x
    x = 594,803,379,881.42/887,861.36
  6. Step 6: Final answer
    x = 669,928.22

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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.