Home / 2,219,421.03-3,061,929.60-1,288,970.40

Finding the Fourth Proportional to 2,219,421.03, 3,061,929.60 and 1,288,970.40

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Solution

The fourth proportional to 2,219,421.03, 3,061,929.60 and 1,288,970.40 is: 1,778,273.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219,421.03 : 3,061,929.60 = 1,288,970.40 : x
  2. Step 2: Convert to fraction form
    2,219,421.03/3,061,929.60 = 1,288,970.40/x
  3. Step 3: Cross multiply
    2,219,421.03x = 3,061,929.60 × 1,288,970.40
  4. Step 4: Simplify right side
    2,219,421.03x = 3,946,736,618,061.41
  5. Step 5: Solve for x
    x = 3,946,736,618,061.41/2,219,421.03
  6. Step 6: Final answer
    x = 1,778,273.05

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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.