Home / 579,748.80-870,055.20-299,121.60

Finding the Fourth Proportional to 579,748.80, 870,055.20 and 299,121.60

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Solution

The fourth proportional to 579,748.80, 870,055.20 and 299,121.60 is: 448,905.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,748.80 : 870,055.20 = 299,121.60 : x
  2. Step 2: Convert to fraction form
    579,748.80/870,055.20 = 299,121.60/x
  3. Step 3: Cross multiply
    579,748.80x = 870,055.20 × 299,121.60
  4. Step 4: Simplify right side
    579,748.80x = 260,252,303,512.32
  5. Step 5: Solve for x
    x = 260,252,303,512.32/579,748.80
  6. Step 6: Final answer
    x = 448,905.29

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Double scale
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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.