Home / 1,210,669.20-1,815,312.60-499,856.40

Finding the Fourth Proportional to 1,210,669.20, 1,815,312.60 and 499,856.40

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Solution

The fourth proportional to 1,210,669.20, 1,815,312.60 and 499,856.40 is: 749,499.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,669.20 : 1,815,312.60 = 499,856.40 : x
  2. Step 2: Convert to fraction form
    1,210,669.20/1,815,312.60 = 499,856.40/x
  3. Step 3: Cross multiply
    1,210,669.20x = 1,815,312.60 × 499,856.40
  4. Step 4: Simplify right side
    1,210,669.20x = 907,395,621,110.64
  5. Step 5: Solve for x
    x = 907,395,621,110.64/1,210,669.20
  6. Step 6: Final answer
    x = 749,499.22

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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.