Home / 749,854.85-1,034,796.89-405,689.67

Finding the Fourth Proportional to 749,854.85, 1,034,796.89 and 405,689.67

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Solution

The fourth proportional to 749,854.85, 1,034,796.89 and 405,689.67 is: 559,850.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,854.85 : 1,034,796.89 = 405,689.67 : x
  2. Step 2: Convert to fraction form
    749,854.85/1,034,796.89 = 405,689.67/x
  3. Step 3: Cross multiply
    749,854.85x = 1,034,796.89 × 405,689.67
  4. Step 4: Simplify right side
    749,854.85x = 419,806,406,792.68
  5. Step 5: Solve for x
    x = 419,806,406,792.68/749,854.85
  6. Step 6: Final answer
    x = 559,850.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.