Home / 930,918.78-1,284,669.12-528,510.78

Finding the Fourth Proportional to 930,918.78, 1,284,669.12 and 528,510.78

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Solution

The fourth proportional to 930,918.78, 1,284,669.12 and 528,510.78 is: 729,345.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    930,918.78 : 1,284,669.12 = 528,510.78 : x
  2. Step 2: Convert to fraction form
    930,918.78/1,284,669.12 = 528,510.78/x
  3. Step 3: Cross multiply
    930,918.78x = 1,284,669.12 × 528,510.78
  4. Step 4: Simplify right side
    930,918.78x = 678,961,478,653.11
  5. Step 5: Solve for x
    x = 678,961,478,653.11/930,918.78
  6. Step 6: Final answer
    x = 729,345.56

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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.