Home / 718,968,305.20-1,078,452,457.80-370,289,865.10

Finding the Fourth Proportional to 718,968,305.20, 1,078,452,457.80 and 370,289,865.10

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Solution

The fourth proportional to 718,968,305.20, 1,078,452,457.80 and 370,289,865.10 is: 555,434,797.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,968,305.20 : 1,078,452,457.80 = 370,289,865.10 : x
  2. Step 2: Convert to fraction form
    718,968,305.20/1,078,452,457.80 = 370,289,865.10/x
  3. Step 3: Cross multiply
    718,968,305.20x = 1,078,452,457.80 × 370,289,865.10
  4. Step 4: Simplify right side
    718,968,305.20x = 399,340,015,115,525,440
  5. Step 5: Solve for x
    x = 399,340,015,115,525,440/718,968,305.20
  6. Step 6: Final answer
    x = 555,434,797.65

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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.