Home / 738,172.98-1,018,678.68-398,641.20

Finding the Fourth Proportional to 738,172.98, 1,018,678.68 and 398,641.20

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Solution

The fourth proportional to 738,172.98, 1,018,678.68 and 398,641.20 is: 550,124.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,172.98 : 1,018,678.68 = 398,641.20 : x
  2. Step 2: Convert to fraction form
    738,172.98/1,018,678.68 = 398,641.20/x
  3. Step 3: Cross multiply
    738,172.98x = 1,018,678.68 × 398,641.20
  4. Step 4: Simplify right side
    738,172.98x = 406,087,291,409.62
  5. Step 5: Solve for x
    x = 406,087,291,409.62/738,172.98
  6. Step 6: Final answer
    x = 550,124.84

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