Home / 1,007,112.80-1,389,878.62-554,403.80

Finding the Fourth Proportional to 1,007,112.80, 1,389,878.62 and 554,403.80

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Solution

The fourth proportional to 1,007,112.80, 1,389,878.62 and 554,403.80 is: 765,111.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,007,112.80 : 1,389,878.62 = 554,403.80 : x
  2. Step 2: Convert to fraction form
    1,007,112.80/1,389,878.62 = 554,403.80/x
  3. Step 3: Cross multiply
    1,007,112.80x = 1,389,878.62 × 554,403.80
  4. Step 4: Simplify right side
    1,007,112.80x = 770,553,988,466.76
  5. Step 5: Solve for x
    x = 770,553,988,466.76/1,007,112.80
  6. Step 6: Final answer
    x = 765,111.90

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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.