Home / 426,343,214.40-639,514,821.60-420,603,651.60

Finding the Fourth Proportional to 426,343,214.40, 639,514,821.60 and 420,603,651.60

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Solution

The fourth proportional to 426,343,214.40, 639,514,821.60 and 420,603,651.60 is: 630,905,477.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,343,214.40 : 639,514,821.60 = 420,603,651.60 : x
  2. Step 2: Convert to fraction form
    426,343,214.40/639,514,821.60 = 420,603,651.60/x
  3. Step 3: Cross multiply
    426,343,214.40x = 639,514,821.60 × 420,603,651.60
  4. Step 4: Simplify right side
    426,343,214.40x = 268,982,269,217,282,592
  5. Step 5: Solve for x
    x = 268,982,269,217,282,592/426,343,214.40
  6. Step 6: Final answer
    x = 630,905,477.40

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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.