Home / 7,128,000.90-10,692,001.35-2,079,311.40

Finding the Fourth Proportional to 7,128,000.90, 10,692,001.35 and 2,079,311.40

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Solution

The fourth proportional to 7,128,000.90, 10,692,001.35 and 2,079,311.40 is: 3,118,967.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128,000.90 : 10,692,001.35 = 2,079,311.40 : x
  2. Step 2: Convert to fraction form
    7,128,000.90/10,692,001.35 = 2,079,311.40/x
  3. Step 3: Cross multiply
    7,128,000.90x = 10,692,001.35 × 2,079,311.40
  4. Step 4: Simplify right side
    7,128,000.90x = 22,232,000,295,870.39
  5. Step 5: Solve for x
    x = 22,232,000,295,870.39/7,128,000.90
  6. Step 6: Final answer
    x = 3,118,967.10

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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.