Home / 420,139,038.60-629,783,405.10-247,527,001.80

Finding the Fourth Proportional to 420,139,038.60, 629,783,405.10 and 247,527,001.80

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Solution

The fourth proportional to 420,139,038.60, 629,783,405.10 and 247,527,001.80 is: 371,040,021.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,139,038.60 : 629,783,405.10 = 247,527,001.80 : x
  2. Step 2: Convert to fraction form
    420,139,038.60/629,783,405.10 = 247,527,001.80/x
  3. Step 3: Cross multiply
    420,139,038.60x = 629,783,405.10 × 247,527,001.80
  4. Step 4: Simplify right side
    420,139,038.60x = 155,888,398,047,797,856
  5. Step 5: Solve for x
    x = 155,888,398,047,797,856/420,139,038.60
  6. Step 6: Final answer
    x = 371,040,021.82

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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.