Home / 8,150,428.80-12,225,643.20-5,280,647.40

Finding the Fourth Proportional to 8,150,428.80, 12,225,643.20 and 5,280,647.40

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Solution

The fourth proportional to 8,150,428.80, 12,225,643.20 and 5,280,647.40 is: 7,920,971.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,150,428.80 : 12,225,643.20 = 5,280,647.40 : x
  2. Step 2: Convert to fraction form
    8,150,428.80/12,225,643.20 = 5,280,647.40/x
  3. Step 3: Cross multiply
    8,150,428.80x = 12,225,643.20 × 5,280,647.40
  4. Step 4: Simplify right side
    8,150,428.80x = 64,559,310,977,407.68
  5. Step 5: Solve for x
    x = 64,559,310,977,407.68/8,150,428.80
  6. Step 6: Final answer
    x = 7,920,971.10

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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.