Home / 8,640,779.40-12,961,169.10-5,435,512.20

Finding the Fourth Proportional to 8,640,779.40, 12,961,169.10 and 5,435,512.20

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Solution

The fourth proportional to 8,640,779.40, 12,961,169.10 and 5,435,512.20 is: 8,153,268.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,640,779.40 : 12,961,169.10 = 5,435,512.20 : x
  2. Step 2: Convert to fraction form
    8,640,779.40/12,961,169.10 = 5,435,512.20/x
  3. Step 3: Cross multiply
    8,640,779.40x = 12,961,169.10 × 5,435,512.20
  4. Step 4: Simplify right side
    8,640,779.40x = 70,450,592,769,313.02
  5. Step 5: Solve for x
    x = 70,450,592,769,313.02/8,640,779.40
  6. Step 6: Final answer
    x = 8,153,268.30

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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.