Home / 1,178,613.40-1,768,049.70-430,821.40

Finding the Fourth Proportional to 1,178,613.40, 1,768,049.70 and 430,821.40

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Solution

The fourth proportional to 1,178,613.40, 1,768,049.70 and 430,821.40 is: 646,279.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,613.40 : 1,768,049.70 = 430,821.40 : x
  2. Step 2: Convert to fraction form
    1,178,613.40/1,768,049.70 = 430,821.40/x
  3. Step 3: Cross multiply
    1,178,613.40x = 1,768,049.70 × 430,821.40
  4. Step 4: Simplify right side
    1,178,613.40x = 761,713,647,023.58
  5. Step 5: Solve for x
    x = 761,713,647,023.58/1,178,613.40
  6. Step 6: Final answer
    x = 646,279.47

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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.