Home / 1,008,019.56-1,389,153.02-721,041.40

Finding the Fourth Proportional to 1,008,019.56, 1,389,153.02 and 721,041.40

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Solution

The fourth proportional to 1,008,019.56, 1,389,153.02 and 721,041.40 is: 993,668.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,019.56 : 1,389,153.02 = 721,041.40 : x
  2. Step 2: Convert to fraction form
    1,008,019.56/1,389,153.02 = 721,041.40/x
  3. Step 3: Cross multiply
    1,008,019.56x = 1,389,153.02 × 721,041.40
  4. Step 4: Simplify right side
    1,008,019.56x = 1,001,636,838,355.03
  5. Step 5: Solve for x
    x = 1,001,636,838,355.03/1,008,019.56
  6. Step 6: Final answer
    x = 993,668.06

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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.