Home / 1,377,009.70-2,065,514.55-430,476.10

Finding the Fourth Proportional to 1,377,009.70, 2,065,514.55 and 430,476.10

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Solution

The fourth proportional to 1,377,009.70, 2,065,514.55 and 430,476.10 is: 645,714.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377,009.70 : 2,065,514.55 = 430,476.10 : x
  2. Step 2: Convert to fraction form
    1,377,009.70/2,065,514.55 = 430,476.10/x
  3. Step 3: Cross multiply
    1,377,009.70x = 2,065,514.55 × 430,476.10
  4. Step 4: Simplify right side
    1,377,009.70x = 889,154,647,977.26
  5. Step 5: Solve for x
    x = 889,154,647,977.26/1,377,009.70
  6. Step 6: Final answer
    x = 645,714.15

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Double scale
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Similar ratio
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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.