Home / 738,492.36-1,019,120.40-398,960.64

Finding the Fourth Proportional to 738,492.36, 1,019,120.40 and 398,960.64

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Solution

The fourth proportional to 738,492.36, 1,019,120.40 and 398,960.64 is: 550,566.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,492.36 : 1,019,120.40 = 398,960.64 : x
  2. Step 2: Convert to fraction form
    738,492.36/1,019,120.40 = 398,960.64/x
  3. Step 3: Cross multiply
    738,492.36x = 1,019,120.40 × 398,960.64
  4. Step 4: Simplify right side
    738,492.36x = 406,588,927,021.06
  5. Step 5: Solve for x
    x = 406,588,927,021.06/738,492.36
  6. Step 6: Final answer
    x = 550,566.19

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1.5x scale

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.