Home / 1,290,599.40-1,935,899.10-786,714.60

Finding the Fourth Proportional to 1,290,599.40, 1,935,899.10 and 786,714.60

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Solution

The fourth proportional to 1,290,599.40, 1,935,899.10 and 786,714.60 is: 1,180,071.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,599.40 : 1,935,899.10 = 786,714.60 : x
  2. Step 2: Convert to fraction form
    1,290,599.40/1,935,899.10 = 786,714.60/x
  3. Step 3: Cross multiply
    1,290,599.40x = 1,935,899.10 × 786,714.60
  4. Step 4: Simplify right side
    1,290,599.40x = 1,523,000,086,096.86
  5. Step 5: Solve for x
    x = 1,523,000,086,096.86/1,290,599.40
  6. Step 6: Final answer
    x = 1,180,071.90

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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.