Home / 1,186,430.71-1,637,273.79-642,566.47

Finding the Fourth Proportional to 1,186,430.71, 1,637,273.79 and 642,566.47

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Solution

The fourth proportional to 1,186,430.71, 1,637,273.79 and 642,566.47 is: 886,741.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,430.71 : 1,637,273.79 = 642,566.47 : x
  2. Step 2: Convert to fraction form
    1,186,430.71/1,637,273.79 = 642,566.47/x
  3. Step 3: Cross multiply
    1,186,430.71x = 1,637,273.79 × 642,566.47
  4. Step 4: Simplify right side
    1,186,430.71x = 1,052,057,235,570.64
  5. Step 5: Solve for x
    x = 1,052,057,235,570.64/1,186,430.71
  6. Step 6: Final answer
    x = 886,741.41

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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.