Home / 855,423.02-1,180,403.78-511,190.62

Finding the Fourth Proportional to 855,423.02, 1,180,403.78 and 511,190.62

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Solution

The fourth proportional to 855,423.02, 1,180,403.78 and 511,190.62 is: 705,395.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,423.02 : 1,180,403.78 = 511,190.62 : x
  2. Step 2: Convert to fraction form
    855,423.02/1,180,403.78 = 511,190.62/x
  3. Step 3: Cross multiply
    855,423.02x = 1,180,403.78 × 511,190.62
  4. Step 4: Simplify right side
    855,423.02x = 603,411,340,148.54
  5. Step 5: Solve for x
    x = 603,411,340,148.54/855,423.02
  6. Step 6: Final answer
    x = 705,395.26

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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.