Home / 1,418,666.90-2,128,000.35-1,288,030.10

Finding the Fourth Proportional to 1,418,666.90, 2,128,000.35 and 1,288,030.10

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Solution

The fourth proportional to 1,418,666.90, 2,128,000.35 and 1,288,030.10 is: 1,932,045.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418,666.90 : 2,128,000.35 = 1,288,030.10 : x
  2. Step 2: Convert to fraction form
    1,418,666.90/2,128,000.35 = 1,288,030.10/x
  3. Step 3: Cross multiply
    1,418,666.90x = 2,128,000.35 × 1,288,030.10
  4. Step 4: Simplify right side
    1,418,666.90x = 2,740,928,503,610.54
  5. Step 5: Solve for x
    x = 2,740,928,503,610.54/1,418,666.90
  6. Step 6: Final answer
    x = 1,932,045.15

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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.