Home / 326,618,735.40-489,928,103.10-217,779,618.60

Finding the Fourth Proportional to 326,618,735.40, 489,928,103.10 and 217,779,618.60

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Solution

The fourth proportional to 326,618,735.40, 489,928,103.10 and 217,779,618.60 is: 326,669,427.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,618,735.40 : 489,928,103.10 = 217,779,618.60 : x
  2. Step 2: Convert to fraction form
    326,618,735.40/489,928,103.10 = 217,779,618.60/x
  3. Step 3: Cross multiply
    326,618,735.40x = 489,928,103.10 × 217,779,618.60
  4. Step 4: Simplify right side
    326,618,735.40x = 106,696,355,434,539,472
  5. Step 5: Solve for x
    x = 106,696,355,434,539,472/326,618,735.40
  6. Step 6: Final answer
    x = 326,669,427.90

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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.