Home / 847,639.22-1,169,807.70-485,176.80

Finding the Fourth Proportional to 847,639.22, 1,169,807.70 and 485,176.80

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Solution

The fourth proportional to 847,639.22, 1,169,807.70 and 485,176.80 is: 669,581.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,639.22 : 1,169,807.70 = 485,176.80 : x
  2. Step 2: Convert to fraction form
    847,639.22/1,169,807.70 = 485,176.80/x
  3. Step 3: Cross multiply
    847,639.22x = 1,169,807.70 × 485,176.80
  4. Step 4: Simplify right side
    847,639.22x = 567,563,556,501.36
  5. Step 5: Solve for x
    x = 567,563,556,501.36/847,639.22
  6. Step 6: Final answer
    x = 669,581.52

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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.