Home / 717,721.02-990,466.38-395,427.96

Finding the Fourth Proportional to 717,721.02, 990,466.38 and 395,427.96

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Solution

The fourth proportional to 717,721.02, 990,466.38 and 395,427.96 is: 545,696.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,721.02 : 990,466.38 = 395,427.96 : x
  2. Step 2: Convert to fraction form
    717,721.02/990,466.38 = 395,427.96/x
  3. Step 3: Cross multiply
    717,721.02x = 990,466.38 × 395,427.96
  4. Step 4: Simplify right side
    717,721.02x = 391,658,100,091.99
  5. Step 5: Solve for x
    x = 391,658,100,091.99/717,721.02
  6. Step 6: Final answer
    x = 545,696.85

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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.