Home / 538,408.32-742,944.96-312,124.80

Finding the Fourth Proportional to 538,408.32, 742,944.96 and 312,124.80

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Solution

The fourth proportional to 538,408.32, 742,944.96 and 312,124.80 is: 430,698.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,408.32 : 742,944.96 = 312,124.80 : x
  2. Step 2: Convert to fraction form
    538,408.32/742,944.96 = 312,124.80/x
  3. Step 3: Cross multiply
    538,408.32x = 742,944.96 × 312,124.80
  4. Step 4: Simplify right side
    538,408.32x = 231,891,547,051.01
  5. Step 5: Solve for x
    x = 231,891,547,051.01/538,408.32
  6. Step 6: Final answer
    x = 430,698.30

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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.