Home / 986,628.76-1,479,343.86-386,871.40

Finding the Fourth Proportional to 986,628.76, 1,479,343.86 and 386,871.40

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Solution

The fourth proportional to 986,628.76, 1,479,343.86 and 386,871.40 is: 580,072.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,628.76 : 1,479,343.86 = 386,871.40 : x
  2. Step 2: Convert to fraction form
    986,628.76/1,479,343.86 = 386,871.40/x
  3. Step 3: Cross multiply
    986,628.76x = 1,479,343.86 × 386,871.40
  4. Step 4: Simplify right side
    986,628.76x = 572,315,830,199.60
  5. Step 5: Solve for x
    x = 572,315,830,199.60/986,628.76
  6. Step 6: Final answer
    x = 580,072.11

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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.