Home / 729,038.70-1,093,558.05-640,465.20

Finding the Fourth Proportional to 729,038.70, 1,093,558.05 and 640,465.20

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Solution

The fourth proportional to 729,038.70, 1,093,558.05 and 640,465.20 is: 960,697.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,038.70 : 1,093,558.05 = 640,465.20 : x
  2. Step 2: Convert to fraction form
    729,038.70/1,093,558.05 = 640,465.20/x
  3. Step 3: Cross multiply
    729,038.70x = 1,093,558.05 × 640,465.20
  4. Step 4: Simplify right side
    729,038.70x = 700,385,875,204.86
  5. Step 5: Solve for x
    x = 700,385,875,204.86/729,038.70
  6. Step 6: Final answer
    x = 960,697.80

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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.