Home / 1,355,555.71-2,030,621.00-815,512.63

Finding the Fourth Proportional to 1,355,555.71, 2,030,621.00 and 815,512.63

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Solution

The fourth proportional to 1,355,555.71, 2,030,621.00 and 815,512.63 is: 1,221,637.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,555.71 : 2,030,621.00 = 815,512.63 : x
  2. Step 2: Convert to fraction form
    1,355,555.71/2,030,621.00 = 815,512.63/x
  3. Step 3: Cross multiply
    1,355,555.71x = 2,030,621.00 × 815,512.63
  4. Step 4: Simplify right side
    1,355,555.71x = 1,655,997,072,607.69
  5. Step 5: Solve for x
    x = 1,655,997,072,607.69/1,355,555.71
  6. Step 6: Final answer
    x = 1,221,637.05

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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.