Home / 420,282,005.70-630,423,008.55-267,604,911.30

Finding the Fourth Proportional to 420,282,005.70, 630,423,008.55 and 267,604,911.30

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Solution

The fourth proportional to 420,282,005.70, 630,423,008.55 and 267,604,911.30 is: 401,407,366.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,282,005.70 : 630,423,008.55 = 267,604,911.30 : x
  2. Step 2: Convert to fraction form
    420,282,005.70/630,423,008.55 = 267,604,911.30/x
  3. Step 3: Cross multiply
    420,282,005.70x = 630,423,008.55 × 267,604,911.30
  4. Step 4: Simplify right side
    420,282,005.70x = 168,704,293,284,501,888
  5. Step 5: Solve for x
    x = 168,704,293,284,501,888/420,282,005.70
  6. Step 6: Final answer
    x = 401,407,366.95

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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.