Home / 528,641.10-729,531.75-286,926.54

Finding the Fourth Proportional to 528,641.10, 729,531.75 and 286,926.54

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Solution

The fourth proportional to 528,641.10, 729,531.75 and 286,926.54 is: 395,962.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,641.10 : 729,531.75 = 286,926.54 : x
  2. Step 2: Convert to fraction form
    528,641.10/729,531.75 = 286,926.54/x
  3. Step 3: Cross multiply
    528,641.10x = 729,531.75 × 286,926.54
  4. Step 4: Simplify right side
    528,641.10x = 209,322,020,847.65
  5. Step 5: Solve for x
    x = 209,322,020,847.65/528,641.10
  6. Step 6: Final answer
    x = 395,962.44

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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.