Home / 1,287,838.60-1,777,128.42-714,833.68

Finding the Fourth Proportional to 1,287,838.60, 1,777,128.42 and 714,833.68

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Solution

The fourth proportional to 1,287,838.60, 1,777,128.42 and 714,833.68 is: 986,421.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,838.60 : 1,777,128.42 = 714,833.68 : x
  2. Step 2: Convert to fraction form
    1,287,838.60/1,777,128.42 = 714,833.68/x
  3. Step 3: Cross multiply
    1,287,838.60x = 1,777,128.42 × 714,833.68
  4. Step 4: Simplify right side
    1,287,838.60x = 1,270,351,248,301.19
  5. Step 5: Solve for x
    x = 1,270,351,248,301.19/1,287,838.60
  6. Step 6: Final answer
    x = 986,421.16

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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.