Home / 1,299,343,100.40-1,949,298,085.80-379,144,479.60

Finding the Fourth Proportional to 1,299,343,100.40, 1,949,298,085.80 and 379,144,479.60

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Solution

The fourth proportional to 1,299,343,100.40, 1,949,298,085.80 and 379,144,479.60 is: 568,799,424.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,343,100.40 : 1,949,298,085.80 = 379,144,479.60 : x
  2. Step 2: Convert to fraction form
    1,299,343,100.40/1,949,298,085.80 = 379,144,479.60/x
  3. Step 3: Cross multiply
    1,299,343,100.40x = 1,949,298,085.80 × 379,144,479.60
  4. Step 4: Simplify right side
    1,299,343,100.40x = 739,065,608,325,917,184
  5. Step 5: Solve for x
    x = 739,065,608,325,917,184/1,299,343,100.40
  6. Step 6: Final answer
    x = 568,799,424.95

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1.5x scale

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.