Home / 1,005,419.80-1,508,129.70-998,421.40

Finding the Fourth Proportional to 1,005,419.80, 1,508,129.70 and 998,421.40

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Solution

The fourth proportional to 1,005,419.80, 1,508,129.70 and 998,421.40 is: 1,497,632.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005,419.80 : 1,508,129.70 = 998,421.40 : x
  2. Step 2: Convert to fraction form
    1,005,419.80/1,508,129.70 = 998,421.40/x
  3. Step 3: Cross multiply
    1,005,419.80x = 1,508,129.70 × 998,421.40
  4. Step 4: Simplify right side
    1,005,419.80x = 1,505,748,966,455.58
  5. Step 5: Solve for x
    x = 1,505,748,966,455.58/1,005,419.80
  6. Step 6: Final answer
    x = 1,497,632.10

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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.