Home / 689,737.20-1,034,605.80-290,828.40

Finding the Fourth Proportional to 689,737.20, 1,034,605.80 and 290,828.40

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Solution

The fourth proportional to 689,737.20, 1,034,605.80 and 290,828.40 is: 436,242.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,737.20 : 1,034,605.80 = 290,828.40 : x
  2. Step 2: Convert to fraction form
    689,737.20/1,034,605.80 = 290,828.40/x
  3. Step 3: Cross multiply
    689,737.20x = 1,034,605.80 × 290,828.40
  4. Step 4: Simplify right side
    689,737.20x = 300,892,749,444.72
  5. Step 5: Solve for x
    x = 300,892,749,444.72/689,737.20
  6. Step 6: Final answer
    x = 436,242.60

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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.