Home / 689,113.12-1,033,398.96-289,945.12

Finding the Fourth Proportional to 689,113.12, 1,033,398.96 and 289,945.12

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Solution

The fourth proportional to 689,113.12, 1,033,398.96 and 289,945.12 is: 434,803.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,113.12 : 1,033,398.96 = 289,945.12 : x
  2. Step 2: Convert to fraction form
    689,113.12/1,033,398.96 = 289,945.12/x
  3. Step 3: Cross multiply
    689,113.12x = 1,033,398.96 × 289,945.12
  4. Step 4: Simplify right side
    689,113.12x = 299,628,985,465.08
  5. Step 5: Solve for x
    x = 299,628,985,465.08/689,113.12
  6. Step 6: Final answer
    x = 434,803.77

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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.