Home / 320,579,739,870.96-480,869,333,515.44-81,814,369,728.72

Finding the Fourth Proportional to 320,579,739,870.96, 480,869,333,515.44 and 81,814,369,728.72

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Solution

The fourth proportional to 320,579,739,870.96, 480,869,333,515.44 and 81,814,369,728.72 is: 122,721,484,081.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,579,739,870.96 : 480,869,333,515.44 = 81,814,369,728.72 : x
  2. Step 2: Convert to fraction form
    320,579,739,870.96/480,869,333,515.44 = 81,814,369,728.72/x
  3. Step 3: Cross multiply
    320,579,739,870.96x = 480,869,333,515.44 × 81,814,369,728.72
  4. Step 4: Simplify right side
    320,579,739,870.96x = 39,342,021,443,435,379,032,064
  5. Step 5: Solve for x
    x = 39,342,021,443,435,379,032,064/320,579,739,870.96
  6. Step 6: Final answer
    x = 122,721,484,081.53

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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.