Home / 1,119,938.40-1,679,907.60-672,040.80

Finding the Fourth Proportional to 1,119,938.40, 1,679,907.60 and 672,040.80

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Solution

The fourth proportional to 1,119,938.40, 1,679,907.60 and 672,040.80 is: 1,008,061.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,938.40 : 1,679,907.60 = 672,040.80 : x
  2. Step 2: Convert to fraction form
    1,119,938.40/1,679,907.60 = 672,040.80/x
  3. Step 3: Cross multiply
    1,119,938.40x = 1,679,907.60 × 672,040.80
  4. Step 4: Simplify right side
    1,119,938.40x = 1,128,966,447,430.08
  5. Step 5: Solve for x
    x = 1,128,966,447,430.08/1,119,938.40
  6. Step 6: Final answer
    x = 1,008,061.20

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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.