Home / 726,865.60-1,090,298.40-443,430.40

Finding the Fourth Proportional to 726,865.60, 1,090,298.40 and 443,430.40

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Solution

The fourth proportional to 726,865.60, 1,090,298.40 and 443,430.40 is: 665,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,865.60 : 1,090,298.40 = 443,430.40 : x
  2. Step 2: Convert to fraction form
    726,865.60/1,090,298.40 = 443,430.40/x
  3. Step 3: Cross multiply
    726,865.60x = 1,090,298.40 × 443,430.40
  4. Step 4: Simplify right side
    726,865.60x = 483,471,455,631.36
  5. Step 5: Solve for x
    x = 483,471,455,631.36/726,865.60
  6. Step 6: Final answer
    x = 665,145.60

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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.