Home / 420,109,850.55-630,164,775.83-297,426,695.70

Finding the Fourth Proportional to 420,109,850.55, 630,164,775.83 and 297,426,695.70

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Solution

The fourth proportional to 420,109,850.55, 630,164,775.83 and 297,426,695.70 is: 446,140,043.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,109,850.55 : 630,164,775.83 = 297,426,695.70 : x
  2. Step 2: Convert to fraction form
    420,109,850.55/630,164,775.83 = 297,426,695.70/x
  3. Step 3: Cross multiply
    420,109,850.55x = 630,164,775.83 × 297,426,695.70
  4. Step 4: Simplify right side
    420,109,850.55x = 187,427,827,020,160,992
  5. Step 5: Solve for x
    x = 187,427,827,020,160,992/420,109,850.55
  6. Step 6: Final answer
    x = 446,140,043.55

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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.