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Finding the Fourth Proportional to 978,433,810.60, 1,467,650,715.90 and 903,606,917.80

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Solution

The fourth proportional to 978,433,810.60, 1,467,650,715.90 and 903,606,917.80 is: 1,355,410,376.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,433,810.60 : 1,467,650,715.90 = 903,606,917.80 : x
  2. Step 2: Convert to fraction form
    978,433,810.60/1,467,650,715.90 = 903,606,917.80/x
  3. Step 3: Cross multiply
    978,433,810.60x = 1,467,650,715.90 × 903,606,917.80
  4. Step 4: Simplify right side
    978,433,810.60x = 1,326,179,339,801,362,432
  5. Step 5: Solve for x
    x = 1,326,179,339,801,362,432/978,433,810.60
  6. Step 6: Final answer
    x = 1,355,410,376.70

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1.5x scale

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.