Home / 1,138,011.70-1,570,409.67-621,783.49

Finding the Fourth Proportional to 1,138,011.70, 1,570,409.67 and 621,783.49

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Solution

The fourth proportional to 1,138,011.70, 1,570,409.67 and 621,783.49 is: 858,035.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,011.70 : 1,570,409.67 = 621,783.49 : x
  2. Step 2: Convert to fraction form
    1,138,011.70/1,570,409.67 = 621,783.49/x
  3. Step 3: Cross multiply
    1,138,011.70x = 1,570,409.67 × 621,783.49
  4. Step 4: Simplify right side
    1,138,011.70x = 976,454,805,342.35
  5. Step 5: Solve for x
    x = 976,454,805,342.35/1,138,011.70
  6. Step 6: Final answer
    x = 858,035.82

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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.