Home / 528,619.85-729,496.10-286,902.42

Finding the Fourth Proportional to 528,619.85, 729,496.10 and 286,902.42

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Solution

The fourth proportional to 528,619.85, 729,496.10 and 286,902.42 is: 395,925.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,619.85 : 729,496.10 = 286,902.42 : x
  2. Step 2: Convert to fraction form
    528,619.85/729,496.10 = 286,902.42/x
  3. Step 3: Cross multiply
    528,619.85x = 729,496.10 × 286,902.42
  4. Step 4: Simplify right side
    528,619.85x = 209,294,196,470.56
  5. Step 5: Solve for x
    x = 209,294,196,470.56/528,619.85
  6. Step 6: Final answer
    x = 395,925.72

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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.