Home / 920,863,863.50-1,381,306,864.88-256,837,465.25

Finding the Fourth Proportional to 920,863,863.50, 1,381,306,864.88 and 256,837,465.25

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Solution

The fourth proportional to 920,863,863.50, 1,381,306,864.88 and 256,837,465.25 is: 385,259,285.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,863,863.50 : 1,381,306,864.88 = 256,837,465.25 : x
  2. Step 2: Convert to fraction form
    920,863,863.50/1,381,306,864.88 = 256,837,465.25/x
  3. Step 3: Cross multiply
    920,863,863.50x = 1,381,306,864.88 × 256,837,465.25
  4. Step 4: Simplify right side
    920,863,863.50x = 354,771,353,907,118,912
  5. Step 5: Solve for x
    x = 354,771,353,907,118,912/920,863,863.50
  6. Step 6: Final answer
    x = 385,259,285.30

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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.