Home / 1,678,008.95-2,315,543.22-989,522.89

Finding the Fourth Proportional to 1,678,008.95, 2,315,543.22 and 989,522.89

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Solution

The fourth proportional to 1,678,008.95, 2,315,543.22 and 989,522.89 is: 1,365,477.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678,008.95 : 2,315,543.22 = 989,522.89 : x
  2. Step 2: Convert to fraction form
    1,678,008.95/2,315,543.22 = 989,522.89/x
  3. Step 3: Cross multiply
    1,678,008.95x = 2,315,543.22 × 989,522.89
  4. Step 4: Simplify right side
    1,678,008.95x = 2,291,283,018,974.31
  5. Step 5: Solve for x
    x = 2,291,283,018,974.31/1,678,008.95
  6. Step 6: Final answer
    x = 1,365,477.23

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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.