Home / 670,144.89-1,005,290.85-290,804.88

Finding the Fourth Proportional to 670,144.89, 1,005,290.85 and 290,804.88

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Solution

The fourth proportional to 670,144.89, 1,005,290.85 and 290,804.88 is: 436,239.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,144.89 : 1,005,290.85 = 290,804.88 : x
  2. Step 2: Convert to fraction form
    670,144.89/1,005,290.85 = 290,804.88/x
  3. Step 3: Cross multiply
    670,144.89x = 1,005,290.85 × 290,804.88
  4. Step 4: Simplify right side
    670,144.89x = 292,343,484,999.35
  5. Step 5: Solve for x
    x = 292,343,484,999.35/670,144.89
  6. Step 6: Final answer
    x = 436,239.22

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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.