Home / 904,751.21-1,355,059.19-431,768.72

Finding the Fourth Proportional to 904,751.21, 1,355,059.19 and 431,768.72

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Solution

The fourth proportional to 904,751.21, 1,355,059.19 and 431,768.72 is: 646,666.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    904,751.21 : 1,355,059.19 = 431,768.72 : x
  2. Step 2: Convert to fraction form
    904,751.21/1,355,059.19 = 431,768.72/x
  3. Step 3: Cross multiply
    904,751.21x = 1,355,059.19 × 431,768.72
  4. Step 4: Simplify right side
    904,751.21x = 585,072,176,457.61
  5. Step 5: Solve for x
    x = 585,072,176,457.61/904,751.21
  6. Step 6: Final answer
    x = 646,666.36

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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.