Home / 7,128,985.20-10,693,477.80-4,294,633.20

Finding the Fourth Proportional to 7,128,985.20, 10,693,477.80 and 4,294,633.20

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Solution

The fourth proportional to 7,128,985.20, 10,693,477.80 and 4,294,633.20 is: 6,441,949.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128,985.20 : 10,693,477.80 = 4,294,633.20 : x
  2. Step 2: Convert to fraction form
    7,128,985.20/10,693,477.80 = 4,294,633.20/x
  3. Step 3: Cross multiply
    7,128,985.20x = 10,693,477.80 × 4,294,633.20
  4. Step 4: Simplify right side
    7,128,985.20x = 45,924,564,783,342.97
  5. Step 5: Solve for x
    x = 45,924,564,783,342.97/7,128,985.20
  6. Step 6: Final answer
    x = 6,441,949.80

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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.