Home / 528,918.90-729,805.42-314,126.34

Finding the Fourth Proportional to 528,918.90, 729,805.42 and 314,126.34

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Solution

The fourth proportional to 528,918.90, 729,805.42 and 314,126.34 is: 433,433.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,918.90 : 729,805.42 = 314,126.34 : x
  2. Step 2: Convert to fraction form
    528,918.90/729,805.42 = 314,126.34/x
  3. Step 3: Cross multiply
    528,918.90x = 729,805.42 × 314,126.34
  4. Step 4: Simplify right side
    528,918.90x = 229,251,105,496.76
  5. Step 5: Solve for x
    x = 229,251,105,496.76/528,918.90
  6. Step 6: Final answer
    x = 433,433.38

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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.