Home / 687,055.20-1,030,582.80-477,103.20

Finding the Fourth Proportional to 687,055.20, 1,030,582.80 and 477,103.20

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Solution

The fourth proportional to 687,055.20, 1,030,582.80 and 477,103.20 is: 715,654.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,055.20 : 1,030,582.80 = 477,103.20 : x
  2. Step 2: Convert to fraction form
    687,055.20/1,030,582.80 = 477,103.20/x
  3. Step 3: Cross multiply
    687,055.20x = 1,030,582.80 × 477,103.20
  4. Step 4: Simplify right side
    687,055.20x = 491,694,351,744.96
  5. Step 5: Solve for x
    x = 491,694,351,744.96/687,055.20
  6. Step 6: Final answer
    x = 715,654.80

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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.