Home / 891,870.86-1,338,010.62-386,516.60

Finding the Fourth Proportional to 891,870.86, 1,338,010.62 and 386,516.60

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Solution

The fourth proportional to 891,870.86, 1,338,010.62 and 386,516.60 is: 579,863.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,870.86 : 1,338,010.62 = 386,516.60 : x
  2. Step 2: Convert to fraction form
    891,870.86/1,338,010.62 = 386,516.60/x
  3. Step 3: Cross multiply
    891,870.86x = 1,338,010.62 × 386,516.60
  4. Step 4: Simplify right side
    891,870.86x = 517,163,315,606.29
  5. Step 5: Solve for x
    x = 517,163,315,606.29/891,870.86
  6. Step 6: Final answer
    x = 579,863.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.