Home / 528,513.12-729,348.60-302,163.36

Finding the Fourth Proportional to 528,513.12, 729,348.60 and 302,163.36

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Solution

The fourth proportional to 528,513.12, 729,348.60 and 302,163.36 is: 416,985.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,513.12 : 729,348.60 = 302,163.36 : x
  2. Step 2: Convert to fraction form
    528,513.12/729,348.60 = 302,163.36/x
  3. Step 3: Cross multiply
    528,513.12x = 729,348.60 × 302,163.36
  4. Step 4: Simplify right side
    528,513.12x = 220,382,423,587.30
  5. Step 5: Solve for x
    x = 220,382,423,587.30/528,513.12
  6. Step 6: Final answer
    x = 416,985.72

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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.