Home / 528,631.26-729,511.82-286,913.80

Finding the Fourth Proportional to 528,631.26, 729,511.82 and 286,913.80

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Solution

The fourth proportional to 528,631.26, 729,511.82 and 286,913.80 is: 395,941.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,631.26 : 729,511.82 = 286,913.80 : x
  2. Step 2: Convert to fraction form
    528,631.26/729,511.82 = 286,913.80/x
  3. Step 3: Cross multiply
    528,631.26x = 729,511.82 × 286,913.80
  4. Step 4: Simplify right side
    528,631.26x = 209,307,008,421.12
  5. Step 5: Solve for x
    x = 209,307,008,421.12/528,631.26
  6. Step 6: Final answer
    x = 395,941.41

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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.