Home / 738,362.16-1,018,940.40-398,830.68

Finding the Fourth Proportional to 738,362.16, 1,018,940.40 and 398,830.68

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Solution

The fourth proportional to 738,362.16, 1,018,940.40 and 398,830.68 is: 550,386.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,362.16 : 1,018,940.40 = 398,830.68 : x
  2. Step 2: Convert to fraction form
    738,362.16/1,018,940.40 = 398,830.68/x
  3. Step 3: Cross multiply
    738,362.16x = 1,018,940.40 × 398,830.68
  4. Step 4: Simplify right side
    738,362.16x = 406,384,692,611.47
  5. Step 5: Solve for x
    x = 406,384,692,611.47/738,362.16
  6. Step 6: Final answer
    x = 550,386.67

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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.