Home / 478,334,689.80-660,101,880.22-258,318,115.80

Finding the Fourth Proportional to 478,334,689.80, 660,101,880.22 and 258,318,115.80

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Solution

The fourth proportional to 478,334,689.80, 660,101,880.22 and 258,318,115.80 is: 356,479,004.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,334,689.80 : 660,101,880.22 = 258,318,115.80 : x
  2. Step 2: Convert to fraction form
    478,334,689.80/660,101,880.22 = 258,318,115.80/x
  3. Step 3: Cross multiply
    478,334,689.80x = 660,101,880.22 × 258,318,115.80
  4. Step 4: Simplify right side
    478,334,689.80x = 170,516,273,934,467,712
  5. Step 5: Solve for x
    x = 170,516,273,934,467,712/478,334,689.80
  6. Step 6: Final answer
    x = 356,479,004.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.