Home / 1,287,638.48-1,776,857.64-714,678.80

Finding the Fourth Proportional to 1,287,638.48, 1,776,857.64 and 714,678.80

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Solution

The fourth proportional to 1,287,638.48, 1,776,857.64 and 714,678.80 is: 986,210.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,638.48 : 1,776,857.64 = 714,678.80 : x
  2. Step 2: Convert to fraction form
    1,287,638.48/1,776,857.64 = 714,678.80/x
  3. Step 3: Cross multiply
    1,287,638.48x = 1,776,857.64 × 714,678.80
  4. Step 4: Simplify right side
    1,287,638.48x = 1,269,882,485,926.03
  5. Step 5: Solve for x
    x = 1,269,882,485,926.03/1,287,638.48
  6. Step 6: Final answer
    x = 986,210.42

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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.