Home / 915,979.60-1,373,969.40-384,101.20

Finding the Fourth Proportional to 915,979.60, 1,373,969.40 and 384,101.20

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Solution

The fourth proportional to 915,979.60, 1,373,969.40 and 384,101.20 is: 576,151.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,979.60 : 1,373,969.40 = 384,101.20 : x
  2. Step 2: Convert to fraction form
    915,979.60/1,373,969.40 = 384,101.20/x
  3. Step 3: Cross multiply
    915,979.60x = 1,373,969.40 × 384,101.20
  4. Step 4: Simplify right side
    915,979.60x = 527,743,295,303.28
  5. Step 5: Solve for x
    x = 527,743,295,303.28/915,979.60
  6. Step 6: Final answer
    x = 576,151.80

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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.