Home / 528,621.52-729,498.40-286,904.09

Finding the Fourth Proportional to 528,621.52, 729,498.40 and 286,904.09

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Solution

The fourth proportional to 528,621.52, 729,498.40 and 286,904.09 is: 395,928.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,621.52 : 729,498.40 = 286,904.09 : x
  2. Step 2: Convert to fraction form
    528,621.52/729,498.40 = 286,904.09/x
  3. Step 3: Cross multiply
    528,621.52x = 729,498.40 × 286,904.09
  4. Step 4: Simplify right side
    528,621.52x = 209,296,077,328.78
  5. Step 5: Solve for x
    x = 209,296,077,328.78/528,621.52
  6. Step 6: Final answer
    x = 395,928.03

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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.