Home / 738,485.10-1,107,071.55-438,647.40

Finding the Fourth Proportional to 738,485.10, 1,107,071.55 and 438,647.40

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Solution

The fourth proportional to 738,485.10, 1,107,071.55 and 438,647.40 is: 657,581.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,485.10 : 1,107,071.55 = 438,647.40 : x
  2. Step 2: Convert to fraction form
    738,485.10/1,107,071.55 = 438,647.40/x
  3. Step 3: Cross multiply
    738,485.10x = 1,107,071.55 × 438,647.40
  4. Step 4: Simplify right side
    738,485.10x = 485,614,057,021.47
  5. Step 5: Solve for x
    x = 485,614,057,021.47/738,485.10
  6. Step 6: Final answer
    x = 657,581.39

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1.5x scale

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.