Home / 743,807.10-1,116,877.05-428,879.10

Finding the Fourth Proportional to 743,807.10, 1,116,877.05 and 428,879.10

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Solution

The fourth proportional to 743,807.10, 1,116,877.05 and 428,879.10 is: 643,991.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,807.10 : 1,116,877.05 = 428,879.10 : x
  2. Step 2: Convert to fraction form
    743,807.10/1,116,877.05 = 428,879.10/x
  3. Step 3: Cross multiply
    743,807.10x = 1,116,877.05 × 428,879.10
  4. Step 4: Simplify right side
    743,807.10x = 479,005,224,014.66
  5. Step 5: Solve for x
    x = 479,005,224,014.66/743,807.10
  6. Step 6: Final answer
    x = 643,991.20

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Double scale
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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.