Home / 1,938,438,420.50-2,908,503,376.32-678,806,614.02

Finding the Fourth Proportional to 1,938,438,420.50, 2,908,503,376.32 and 678,806,614.02

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Solution

The fourth proportional to 1,938,438,420.50, 2,908,503,376.32 and 678,806,614.02 is: 1,018,506,086.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938,438,420.50 : 2,908,503,376.32 = 678,806,614.02 : x
  2. Step 2: Convert to fraction form
    1,938,438,420.50/2,908,503,376.32 = 678,806,614.02/x
  3. Step 3: Cross multiply
    1,938,438,420.50x = 2,908,503,376.32 × 678,806,614.02
  4. Step 4: Simplify right side
    1,938,438,420.50x = 1,974,311,328,745,517,056
  5. Step 5: Solve for x
    x = 1,974,311,328,745,517,056/1,938,438,420.50
  6. Step 6: Final answer
    x = 1,018,506,086.07

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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.