Home / 678,742,912.65-1,018,114,368.98-269,799,063.15

Finding the Fourth Proportional to 678,742,912.65, 1,018,114,368.98 and 269,799,063.15

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Solution

The fourth proportional to 678,742,912.65, 1,018,114,368.98 and 269,799,063.15 is: 404,698,594.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,742,912.65 : 1,018,114,368.98 = 269,799,063.15 : x
  2. Step 2: Convert to fraction form
    678,742,912.65/1,018,114,368.98 = 269,799,063.15/x
  3. Step 3: Cross multiply
    678,742,912.65x = 1,018,114,368.98 × 269,799,063.15
  4. Step 4: Simplify right side
    678,742,912.65x = 274,686,302,929,008,416
  5. Step 5: Solve for x
    x = 274,686,302,929,008,416/678,742,912.65
  6. Step 6: Final answer
    x = 404,698,594.73

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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.