Home / 1,438,315.40-2,159,028.30-808,459.40

Finding the Fourth Proportional to 1,438,315.40, 2,159,028.30 and 808,459.40

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Solution

The fourth proportional to 1,438,315.40, 2,159,028.30 and 808,459.40 is: 1,213,563.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,315.40 : 2,159,028.30 = 808,459.40 : x
  2. Step 2: Convert to fraction form
    1,438,315.40/2,159,028.30 = 808,459.40/x
  3. Step 3: Cross multiply
    1,438,315.40x = 2,159,028.30 × 808,459.40
  4. Step 4: Simplify right side
    1,438,315.40x = 1,745,486,724,001.02
  5. Step 5: Solve for x
    x = 1,745,486,724,001.02/1,438,315.40
  6. Step 6: Final answer
    x = 1,213,563.26

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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.