Home / 528,829.52-729,764.80-287,106.86

Finding the Fourth Proportional to 528,829.52, 729,764.80 and 287,106.86

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Solution

The fourth proportional to 528,829.52, 729,764.80 and 287,106.86 is: 396,196.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,829.52 : 729,764.80 = 287,106.86 : x
  2. Step 2: Convert to fraction form
    528,829.52/729,764.80 = 287,106.86/x
  3. Step 3: Cross multiply
    528,829.52x = 729,764.80 × 287,106.86
  4. Step 4: Simplify right side
    528,829.52x = 209,520,480,266.53
  5. Step 5: Solve for x
    x = 209,520,480,266.53/528,829.52
  6. Step 6: Final answer
    x = 396,196.64

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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.