Home / 1,909,358.78-2,634,895.15-1,421,509.62

Finding the Fourth Proportional to 1,909,358.78, 2,634,895.15 and 1,421,509.62

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Solution

The fourth proportional to 1,909,358.78, 2,634,895.15 and 1,421,509.62 is: 1,961,668.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909,358.78 : 2,634,895.15 = 1,421,509.62 : x
  2. Step 2: Convert to fraction form
    1,909,358.78/2,634,895.15 = 1,421,509.62/x
  3. Step 3: Cross multiply
    1,909,358.78x = 2,634,895.15 × 1,421,509.62
  4. Step 4: Simplify right side
    1,909,358.78x = 3,745,528,803,416.34
  5. Step 5: Solve for x
    x = 3,745,528,803,416.34/1,909,358.78
  6. Step 6: Final answer
    x = 1,961,668.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.