Home / 828,799,814.40-1,243,647,619.20-368,808,979.20

Finding the Fourth Proportional to 828,799,814.40, 1,243,647,619.20 and 368,808,979.20

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Solution

The fourth proportional to 828,799,814.40, 1,243,647,619.20 and 368,808,979.20 is: 553,412,779.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,799,814.40 : 1,243,647,619.20 = 368,808,979.20 : x
  2. Step 2: Convert to fraction form
    828,799,814.40/1,243,647,619.20 = 368,808,979.20/x
  3. Step 3: Cross multiply
    828,799,814.40x = 1,243,647,619.20 × 368,808,979.20
  4. Step 4: Simplify right side
    828,799,814.40x = 458,668,408,921,662,336
  5. Step 5: Solve for x
    x = 458,668,408,921,662,336/828,799,814.40
  6. Step 6: Final answer
    x = 553,412,779.48

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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.