Home / 986,645.40-1,479,968.10-785,878.80

Finding the Fourth Proportional to 986,645.40, 1,479,968.10 and 785,878.80

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Solution

The fourth proportional to 986,645.40, 1,479,968.10 and 785,878.80 is: 1,178,818.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,645.40 : 1,479,968.10 = 785,878.80 : x
  2. Step 2: Convert to fraction form
    986,645.40/1,479,968.10 = 785,878.80/x
  3. Step 3: Cross multiply
    986,645.40x = 1,479,968.10 × 785,878.80
  4. Step 4: Simplify right side
    986,645.40x = 1,163,075,554,466.28
  5. Step 5: Solve for x
    x = 1,163,075,554,466.28/986,645.40
  6. Step 6: Final answer
    x = 1,178,818.20

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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.