Home / 860,878,689.96-1,291,309,525.08-394,407,798.24

Finding the Fourth Proportional to 860,878,689.96, 1,291,309,525.08 and 394,407,798.24

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Solution

The fourth proportional to 860,878,689.96, 1,291,309,525.08 and 394,407,798.24 is: 591,607,798.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,878,689.96 : 1,291,309,525.08 = 394,407,798.24 : x
  2. Step 2: Convert to fraction form
    860,878,689.96/1,291,309,525.08 = 394,407,798.24/x
  3. Step 3: Cross multiply
    860,878,689.96x = 1,291,309,525.08 × 394,407,798.24
  4. Step 4: Simplify right side
    860,878,689.96x = 509,302,546,633,142,848
  5. Step 5: Solve for x
    x = 509,302,546,633,142,848/860,878,689.96
  6. Step 6: Final answer
    x = 591,607,798.60

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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.