Home / 770,845.08-1,155,869.21-338,385.54

Finding the Fourth Proportional to 770,845.08, 1,155,869.21 and 338,385.54

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Solution

The fourth proportional to 770,845.08, 1,155,869.21 and 338,385.54 is: 507,403.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,845.08 : 1,155,869.21 = 338,385.54 : x
  2. Step 2: Convert to fraction form
    770,845.08/1,155,869.21 = 338,385.54/x
  3. Step 3: Cross multiply
    770,845.08x = 1,155,869.21 × 338,385.54
  4. Step 4: Simplify right side
    770,845.08x = 391,129,426,795.22
  5. Step 5: Solve for x
    x = 391,129,426,795.22/770,845.08
  6. Step 6: Final answer
    x = 507,403.42

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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.