Home / 528,025,878.40-792,038,817.60-139,908,611.20

Finding the Fourth Proportional to 528,025,878.40, 792,038,817.60 and 139,908,611.20

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Solution

The fourth proportional to 528,025,878.40, 792,038,817.60 and 139,908,611.20 is: 209,862,916.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,025,878.40 : 792,038,817.60 = 139,908,611.20 : x
  2. Step 2: Convert to fraction form
    528,025,878.40/792,038,817.60 = 139,908,611.20/x
  3. Step 3: Cross multiply
    528,025,878.40x = 792,038,817.60 × 139,908,611.20
  4. Step 4: Simplify right side
    528,025,878.40x = 110,813,050,986,906,112
  5. Step 5: Solve for x
    x = 110,813,050,986,906,112/528,025,878.40
  6. Step 6: Final answer
    x = 209,862,916.80

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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.