Home / 528,725.18-729,648.33-287,008.22

Finding the Fourth Proportional to 528,725.18, 729,648.33 and 287,008.22

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Solution

The fourth proportional to 528,725.18, 729,648.33 and 287,008.22 is: 396,075.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,725.18 : 729,648.33 = 287,008.22 : x
  2. Step 2: Convert to fraction form
    528,725.18/729,648.33 = 287,008.22/x
  3. Step 3: Cross multiply
    528,725.18x = 729,648.33 × 287,008.22
  4. Step 4: Simplify right side
    528,725.18x = 209,415,068,419.27
  5. Step 5: Solve for x
    x = 209,415,068,419.27/528,725.18
  6. Step 6: Final answer
    x = 396,075.46

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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.