Home / 377,324.51-521,000.09-289,971.25

Finding the Fourth Proportional to 377,324.51, 521,000.09 and 289,971.25

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Solution

The fourth proportional to 377,324.51, 521,000.09 and 289,971.25 is: 400,384.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,324.51 : 521,000.09 = 289,971.25 : x
  2. Step 2: Convert to fraction form
    377,324.51/521,000.09 = 289,971.25/x
  3. Step 3: Cross multiply
    377,324.51x = 521,000.09 × 289,971.25
  4. Step 4: Simplify right side
    377,324.51x = 151,075,047,347.41
  5. Step 5: Solve for x
    x = 151,075,047,347.41/377,324.51
  6. Step 6: Final answer
    x = 400,384.93

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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.