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Finding the Fourth Proportional to 903,640,010.80, 1,355,460,016.40 and 903,640,010.80

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Solution

The fourth proportional to 903,640,010.80, 1,355,460,016.40 and 903,640,010.80 is: 1,355,460,016.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    903,640,010.80 : 1,355,460,016.40 = 903,640,010.80 : x
  2. Step 2: Convert to fraction form
    903,640,010.80/1,355,460,016.40 = 903,640,010.80/x
  3. Step 3: Cross multiply
    903,640,010.80x = 1,355,460,016.40 × 903,640,010.80
  4. Step 4: Simplify right side
    903,640,010.80x = 1,224,847,903,858,664,192
  5. Step 5: Solve for x
    x = 1,224,847,903,858,664,192/903,640,010.80
  6. Step 6: Final answer
    x = 1,355,460,016.40

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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.