Home / 1,291,816.40-1,934,225.40-1,011,880.40

Finding the Fourth Proportional to 1,291,816.40, 1,934,225.40 and 1,011,880.40

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Solution

The fourth proportional to 1,291,816.40, 1,934,225.40 and 1,011,880.40 is: 1,515,079.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,816.40 : 1,934,225.40 = 1,011,880.40 : x
  2. Step 2: Convert to fraction form
    1,291,816.40/1,934,225.40 = 1,011,880.40/x
  3. Step 3: Cross multiply
    1,291,816.40x = 1,934,225.40 × 1,011,880.40
  4. Step 4: Simplify right side
    1,291,816.40x = 1,957,204,771,442.16
  5. Step 5: Solve for x
    x = 1,957,204,771,442.16/1,291,816.40
  6. Step 6: Final answer
    x = 1,515,079.67

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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.