Home / 499,283.38-689,011.41-272,928.94

Finding the Fourth Proportional to 499,283.38, 689,011.41 and 272,928.94

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Solution

The fourth proportional to 499,283.38, 689,011.41 and 272,928.94 is: 376,642.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,283.38 : 689,011.41 = 272,928.94 : x
  2. Step 2: Convert to fraction form
    499,283.38/689,011.41 = 272,928.94/x
  3. Step 3: Cross multiply
    499,283.38x = 689,011.41 × 272,928.94
  4. Step 4: Simplify right side
    499,283.38x = 188,051,153,779.21
  5. Step 5: Solve for x
    x = 188,051,153,779.21/499,283.38
  6. Step 6: Final answer
    x = 376,642.13

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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.