Home / 1,007,137.20-1,389,845.70-554,428.20

Finding the Fourth Proportional to 1,007,137.20, 1,389,845.70 and 554,428.20

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Solution

The fourth proportional to 1,007,137.20, 1,389,845.70 and 554,428.20 is: 765,108.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,007,137.20 : 1,389,845.70 = 554,428.20 : x
  2. Step 2: Convert to fraction form
    1,007,137.20/1,389,845.70 = 554,428.20/x
  3. Step 3: Cross multiply
    1,007,137.20x = 1,389,845.70 × 554,428.20
  4. Step 4: Simplify right side
    1,007,137.20x = 770,569,649,728.74
  5. Step 5: Solve for x
    x = 770,569,649,728.74/1,007,137.20
  6. Step 6: Final answer
    x = 765,108.91

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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.