Home / 1,178,664.40-1,768,126.20-430,872.40

Finding the Fourth Proportional to 1,178,664.40, 1,768,126.20 and 430,872.40

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Solution

The fourth proportional to 1,178,664.40, 1,768,126.20 and 430,872.40 is: 646,355.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,664.40 : 1,768,126.20 = 430,872.40 : x
  2. Step 2: Convert to fraction form
    1,178,664.40/1,768,126.20 = 430,872.40/x
  3. Step 3: Cross multiply
    1,178,664.40x = 1,768,126.20 × 430,872.40
  4. Step 4: Simplify right side
    1,178,664.40x = 761,836,779,296.88
  5. Step 5: Solve for x
    x = 761,836,779,296.88/1,178,664.40
  6. Step 6: Final answer
    x = 646,355.98

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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.