Home / 920,488.55-1,380,950.13-289,402.35

Finding the Fourth Proportional to 920,488.55, 1,380,950.13 and 289,402.35

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Solution

The fourth proportional to 920,488.55, 1,380,950.13 and 289,402.35 is: 434,171.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,488.55 : 1,380,950.13 = 289,402.35 : x
  2. Step 2: Convert to fraction form
    920,488.55/1,380,950.13 = 289,402.35/x
  3. Step 3: Cross multiply
    920,488.55x = 1,380,950.13 × 289,402.35
  4. Step 4: Simplify right side
    920,488.55x = 399,650,212,854.81
  5. Step 5: Solve for x
    x = 399,650,212,854.81/920,488.55
  6. Step 6: Final answer
    x = 434,171.85

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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.