Home / 687,320.40-1,030,980.60-181,880.40

Finding the Fourth Proportional to 687,320.40, 1,030,980.60 and 181,880.40

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Solution

The fourth proportional to 687,320.40, 1,030,980.60 and 181,880.40 is: 272,820.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,320.40 : 1,030,980.60 = 181,880.40 : x
  2. Step 2: Convert to fraction form
    687,320.40/1,030,980.60 = 181,880.40/x
  3. Step 3: Cross multiply
    687,320.40x = 1,030,980.60 × 181,880.40
  4. Step 4: Simplify right side
    687,320.40x = 187,515,163,920.24
  5. Step 5: Solve for x
    x = 187,515,163,920.24/687,320.40
  6. Step 6: Final answer
    x = 272,820.60

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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.