Home / 1,329,705.40-1,994,558.10-431,145.40

Finding the Fourth Proportional to 1,329,705.40, 1,994,558.10 and 431,145.40

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Solution

The fourth proportional to 1,329,705.40, 1,994,558.10 and 431,145.40 is: 646,718.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329,705.40 : 1,994,558.10 = 431,145.40 : x
  2. Step 2: Convert to fraction form
    1,329,705.40/1,994,558.10 = 431,145.40/x
  3. Step 3: Cross multiply
    1,329,705.40x = 1,994,558.10 × 431,145.40
  4. Step 4: Simplify right side
    1,329,705.40x = 859,944,549,847.74
  5. Step 5: Solve for x
    x = 859,944,549,847.74/1,329,705.40
  6. Step 6: Final answer
    x = 646,718.10

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Double scale
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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.