Home / 921,320.70-1,382,175.45-290,298.30

Finding the Fourth Proportional to 921,320.70, 1,382,175.45 and 290,298.30

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Solution

The fourth proportional to 921,320.70, 1,382,175.45 and 290,298.30 is: 435,508.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,320.70 : 1,382,175.45 = 290,298.30 : x
  2. Step 2: Convert to fraction form
    921,320.70/1,382,175.45 = 290,298.30/x
  3. Step 3: Cross multiply
    921,320.70x = 1,382,175.45 × 290,298.30
  4. Step 4: Simplify right side
    921,320.70x = 401,243,183,436.74
  5. Step 5: Solve for x
    x = 401,243,183,436.74/921,320.70
  6. Step 6: Final answer
    x = 435,508.70

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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.