Home / 326,427,986.40-489,641,979.60-84,090,890.40

Finding the Fourth Proportional to 326,427,986.40, 489,641,979.60 and 84,090,890.40

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Solution

The fourth proportional to 326,427,986.40, 489,641,979.60 and 84,090,890.40 is: 126,136,335.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,427,986.40 : 489,641,979.60 = 84,090,890.40 : x
  2. Step 2: Convert to fraction form
    326,427,986.40/489,641,979.60 = 84,090,890.40/x
  3. Step 3: Cross multiply
    326,427,986.40x = 489,641,979.60 × 84,090,890.40
  4. Step 4: Simplify right side
    326,427,986.40x = 41,174,430,041,782,640
  5. Step 5: Solve for x
    x = 41,174,430,041,782,640/326,427,986.40
  6. Step 6: Final answer
    x = 126,136,335.60

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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.