Home / 832,373,128.40-1,247,215,999.80-525,115,374.80

Finding the Fourth Proportional to 832,373,128.40, 1,247,215,999.80 and 525,115,374.80

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Solution

The fourth proportional to 832,373,128.40, 1,247,215,999.80 and 525,115,374.80 is: 786,825,372.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    832,373,128.40 : 1,247,215,999.80 = 525,115,374.80 : x
  2. Step 2: Convert to fraction form
    832,373,128.40/1,247,215,999.80 = 525,115,374.80/x
  3. Step 3: Cross multiply
    832,373,128.40x = 1,247,215,999.80 × 525,115,374.80
  4. Step 4: Simplify right side
    832,373,128.40x = 654,932,297,191,533,696
  5. Step 5: Solve for x
    x = 654,932,297,191,533,696/832,373,128.40
  6. Step 6: Final answer
    x = 786,825,372.96

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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.