Home / 820,101.51-1,230,239.88-346,834.71

Finding the Fourth Proportional to 820,101.51, 1,230,239.88 and 346,834.71

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Solution

The fourth proportional to 820,101.51, 1,230,239.88 and 346,834.71 is: 520,289.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,101.51 : 1,230,239.88 = 346,834.71 : x
  2. Step 2: Convert to fraction form
    820,101.51/1,230,239.88 = 346,834.71/x
  3. Step 3: Cross multiply
    820,101.51x = 1,230,239.88 × 346,834.71
  4. Step 4: Simplify right side
    820,101.51x = 426,689,892,010.24
  5. Step 5: Solve for x
    x = 426,689,892,010.24/820,101.51
  6. Step 6: Final answer
    x = 520,289.12

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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.