Home / 8,319,159.80-12,478,739.70-5,113,892.60

Finding the Fourth Proportional to 8,319,159.80, 12,478,739.70 and 5,113,892.60

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Solution

The fourth proportional to 8,319,159.80, 12,478,739.70 and 5,113,892.60 is: 7,670,838.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,319,159.80 : 12,478,739.70 = 5,113,892.60 : x
  2. Step 2: Convert to fraction form
    8,319,159.80/12,478,739.70 = 5,113,892.60/x
  3. Step 3: Cross multiply
    8,319,159.80x = 12,478,739.70 × 5,113,892.60
  4. Step 4: Simplify right side
    8,319,159.80x = 63,814,934,609,156.21
  5. Step 5: Solve for x
    x = 63,814,934,609,156.21/8,319,159.80
  6. Step 6: Final answer
    x = 7,670,838.90

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Similar ratio
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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.