Home / 399,037.32-549,911.70-285,663.24

Finding the Fourth Proportional to 399,037.32, 549,911.70 and 285,663.24

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Solution

The fourth proportional to 399,037.32, 549,911.70 and 285,663.24 is: 393,671.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,037.32 : 549,911.70 = 285,663.24 : x
  2. Step 2: Convert to fraction form
    399,037.32/549,911.70 = 285,663.24/x
  3. Step 3: Cross multiply
    399,037.32x = 549,911.70 × 285,663.24
  4. Step 4: Simplify right side
    399,037.32x = 157,089,557,935.91
  5. Step 5: Solve for x
    x = 157,089,557,935.91/399,037.32
  6. Step 6: Final answer
    x = 393,671.34

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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.