Home / 1,086,400,619.80-1,629,600,929.70-396,330,386.20

Finding the Fourth Proportional to 1,086,400,619.80, 1,629,600,929.70 and 396,330,386.20

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Solution

The fourth proportional to 1,086,400,619.80, 1,629,600,929.70 and 396,330,386.20 is: 594,495,579.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,400,619.80 : 1,629,600,929.70 = 396,330,386.20 : x
  2. Step 2: Convert to fraction form
    1,086,400,619.80/1,629,600,929.70 = 396,330,386.20/x
  3. Step 3: Cross multiply
    1,086,400,619.80x = 1,629,600,929.70 × 396,330,386.20
  4. Step 4: Simplify right side
    1,086,400,619.80x = 645,860,365,819,880,064
  5. Step 5: Solve for x
    x = 645,860,365,819,880,064/1,086,400,619.80
  6. Step 6: Final answer
    x = 594,495,579.30

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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.