Home / 528,623.57-729,507.53-286,909.04

Finding the Fourth Proportional to 528,623.57, 729,507.53 and 286,909.04

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Solution

The fourth proportional to 528,623.57, 729,507.53 and 286,909.04 is: 395,938.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,623.57 : 729,507.53 = 286,909.04 : x
  2. Step 2: Convert to fraction form
    528,623.57/729,507.53 = 286,909.04/x
  3. Step 3: Cross multiply
    528,623.57x = 729,507.53 × 286,909.04
  4. Step 4: Simplify right side
    528,623.57x = 209,302,305,105.07
  5. Step 5: Solve for x
    x = 209,302,305,105.07/528,623.57
  6. Step 6: Final answer
    x = 395,938.28

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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.