Home / 718,997,873.90-1,078,496,810.85-258,876,256.10

Finding the Fourth Proportional to 718,997,873.90, 1,078,496,810.85 and 258,876,256.10

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Solution

The fourth proportional to 718,997,873.90, 1,078,496,810.85 and 258,876,256.10 is: 388,314,384.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,997,873.90 : 1,078,496,810.85 = 258,876,256.10 : x
  2. Step 2: Convert to fraction form
    718,997,873.90/1,078,496,810.85 = 258,876,256.10/x
  3. Step 3: Cross multiply
    718,997,873.90x = 1,078,496,810.85 × 258,876,256.10
  4. Step 4: Simplify right side
    718,997,873.90x = 279,197,216,608,637,824
  5. Step 5: Solve for x
    x = 279,197,216,608,637,824/718,997,873.90
  6. Step 6: Final answer
    x = 388,314,384.15

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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.