Home / 692,074.40-1,038,111.60-687,408.80

Finding the Fourth Proportional to 692,074.40, 1,038,111.60 and 687,408.80

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Solution

The fourth proportional to 692,074.40, 1,038,111.60 and 687,408.80 is: 1,031,113.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,074.40 : 1,038,111.60 = 687,408.80 : x
  2. Step 2: Convert to fraction form
    692,074.40/1,038,111.60 = 687,408.80/x
  3. Step 3: Cross multiply
    692,074.40x = 1,038,111.60 × 687,408.80
  4. Step 4: Simplify right side
    692,074.40x = 713,607,049,222.08
  5. Step 5: Solve for x
    x = 713,607,049,222.08/692,074.40
  6. Step 6: Final answer
    x = 1,031,113.20

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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.