Home / 726,347.60-1,089,521.40-442,912.40

Finding the Fourth Proportional to 726,347.60, 1,089,521.40 and 442,912.40

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Solution

The fourth proportional to 726,347.60, 1,089,521.40 and 442,912.40 is: 664,368.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,347.60 : 1,089,521.40 = 442,912.40 : x
  2. Step 2: Convert to fraction form
    726,347.60/1,089,521.40 = 442,912.40/x
  3. Step 3: Cross multiply
    726,347.60x = 1,089,521.40 × 442,912.40
  4. Step 4: Simplify right side
    726,347.60x = 482,562,538,125.36
  5. Step 5: Solve for x
    x = 482,562,538,125.36/726,347.60
  6. Step 6: Final answer
    x = 664,368.60

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1.5x scale

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.