Home / 762,678.31-1,143,568.89-289,396.93

Finding the Fourth Proportional to 762,678.31, 1,143,568.89 and 289,396.93

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Solution

The fourth proportional to 762,678.31, 1,143,568.89 and 289,396.93 is: 433,925.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    762,678.31 : 1,143,568.89 = 289,396.93 : x
  2. Step 2: Convert to fraction form
    762,678.31/1,143,568.89 = 289,396.93/x
  3. Step 3: Cross multiply
    762,678.31x = 1,143,568.89 × 289,396.93
  4. Step 4: Simplify right side
    762,678.31x = 330,945,326,009.51
  5. Step 5: Solve for x
    x = 330,945,326,009.51/762,678.31
  6. Step 6: Final answer
    x = 433,925.18

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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.