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Finding the Fourth Proportional to 877,409.10, 1,317,097.80 and 678,610.80

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Solution

The fourth proportional to 877,409.10, 1,317,097.80 and 678,610.80 is: 1,018,677.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,409.10 : 1,317,097.80 = 678,610.80 : x
  2. Step 2: Convert to fraction form
    877,409.10/1,317,097.80 = 678,610.80/x
  3. Step 3: Cross multiply
    877,409.10x = 1,317,097.80 × 678,610.80
  4. Step 4: Simplify right side
    877,409.10x = 893,796,791,736.24
  5. Step 5: Solve for x
    x = 893,796,791,736.24/877,409.10
  6. Step 6: Final answer
    x = 1,018,677.37

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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.