Home / 726,991.58-1,090,166.60-389,931.14

Finding the Fourth Proportional to 726,991.58, 1,090,166.60 and 389,931.14

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Solution

The fourth proportional to 726,991.58, 1,090,166.60 and 389,931.14 is: 584,724.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,991.58 : 1,090,166.60 = 389,931.14 : x
  2. Step 2: Convert to fraction form
    726,991.58/1,090,166.60 = 389,931.14/x
  3. Step 3: Cross multiply
    726,991.58x = 1,090,166.60 × 389,931.14
  4. Step 4: Simplify right side
    726,991.58x = 425,089,905,127.92
  5. Step 5: Solve for x
    x = 425,089,905,127.92/726,991.58
  6. Step 6: Final answer
    x = 584,724.66

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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.