Home / 1,213,335.40-1,820,003.10-977,139.40

Finding the Fourth Proportional to 1,213,335.40, 1,820,003.10 and 977,139.40

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Solution

The fourth proportional to 1,213,335.40, 1,820,003.10 and 977,139.40 is: 1,465,709.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,335.40 : 1,820,003.10 = 977,139.40 : x
  2. Step 2: Convert to fraction form
    1,213,335.40/1,820,003.10 = 977,139.40/x
  3. Step 3: Cross multiply
    1,213,335.40x = 1,820,003.10 × 977,139.40
  4. Step 4: Simplify right side
    1,213,335.40x = 1,778,396,737,132.14
  5. Step 5: Solve for x
    x = 1,778,396,737,132.14/1,213,335.40
  6. Step 6: Final answer
    x = 1,465,709.10

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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.