Home / 3,128,005.70-4,688,509.35-1,330,583.30

Finding the Fourth Proportional to 3,128,005.70, 4,688,509.35 and 1,330,583.30

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Solution

The fourth proportional to 3,128,005.70, 4,688,509.35 and 1,330,583.30 is: 1,994,386.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128,005.70 : 4,688,509.35 = 1,330,583.30 : x
  2. Step 2: Convert to fraction form
    3,128,005.70/4,688,509.35 = 1,330,583.30/x
  3. Step 3: Cross multiply
    3,128,005.70x = 4,688,509.35 × 1,330,583.30
  4. Step 4: Simplify right side
    3,128,005.70x = 6,238,452,243,003.86
  5. Step 5: Solve for x
    x = 6,238,452,243,003.86/3,128,005.70
  6. Step 6: Final answer
    x = 1,994,386.47

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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.