Home / 545,339.67-817,911-190,455.18

Finding the Fourth Proportional to 545,339.67, 817,911 and 190,455.18

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Solution

The fourth proportional to 545,339.67, 817,911 and 190,455.18 is: 285,648.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,339.67 : 817,911 = 190,455.18 : x
  2. Step 2: Convert to fraction form
    545,339.67/817,911 = 190,455.18/x
  3. Step 3: Cross multiply
    545,339.67x = 817,911 × 190,455.18
  4. Step 4: Simplify right side
    545,339.67x = 155,775,386,728.98
  5. Step 5: Solve for x
    x = 155,775,386,728.98/545,339.67
  6. Step 6: Final answer
    x = 285,648.37

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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.