Home / 1,340,712,987.40-2,011,358,943.60-408,108,762.28

Finding the Fourth Proportional to 1,340,712,987.40, 2,011,358,943.60 and 408,108,762.28

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Solution

The fourth proportional to 1,340,712,987.40, 2,011,358,943.60 and 408,108,762.28 is: 612,251,254.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,340,712,987.40 : 2,011,358,943.60 = 408,108,762.28 : x
  2. Step 2: Convert to fraction form
    1,340,712,987.40/2,011,358,943.60 = 408,108,762.28/x
  3. Step 3: Cross multiply
    1,340,712,987.40x = 2,011,358,943.60 × 408,108,762.28
  4. Step 4: Simplify right side
    1,340,712,987.40x = 820,853,208,973,404,288
  5. Step 5: Solve for x
    x = 820,853,208,973,404,288/1,340,712,987.40
  6. Step 6: Final answer
    x = 612,251,254.88

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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.