Home / 678,742,968.40-1,018,114,452.60-269,799,118.90

Finding the Fourth Proportional to 678,742,968.40, 1,018,114,452.60 and 269,799,118.90

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Solution

The fourth proportional to 678,742,968.40, 1,018,114,452.60 and 269,799,118.90 is: 404,698,678.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,742,968.40 : 1,018,114,452.60 = 269,799,118.90 : x
  2. Step 2: Convert to fraction form
    678,742,968.40/1,018,114,452.60 = 269,799,118.90/x
  3. Step 3: Cross multiply
    678,742,968.40x = 1,018,114,452.60 × 269,799,118.90
  4. Step 4: Simplify right side
    678,742,968.40x = 274,686,382,250,835,808
  5. Step 5: Solve for x
    x = 274,686,382,250,835,808/678,742,968.40
  6. Step 6: Final answer
    x = 404,698,678.35

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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.