Home / 451,624.32-623,040-290,448.96

Finding the Fourth Proportional to 451,624.32, 623,040 and 290,448.96

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Solution

The fourth proportional to 451,624.32, 623,040 and 290,448.96 is: 400,689.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,624.32 : 623,040 = 290,448.96 : x
  2. Step 2: Convert to fraction form
    451,624.32/623,040 = 290,448.96/x
  3. Step 3: Cross multiply
    451,624.32x = 623,040 × 290,448.96
  4. Step 4: Simplify right side
    451,624.32x = 180,961,320,038.40
  5. Step 5: Solve for x
    x = 180,961,320,038.40/451,624.32
  6. Step 6: Final answer
    x = 400,689.94

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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.