Home / 528,360.66-729,137.96-286,643.16

Finding the Fourth Proportional to 528,360.66, 729,137.96 and 286,643.16

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Solution

The fourth proportional to 528,360.66, 729,137.96 and 286,643.16 is: 395,567.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,360.66 : 729,137.96 = 286,643.16 : x
  2. Step 2: Convert to fraction form
    528,360.66/729,137.96 = 286,643.16/x
  3. Step 3: Cross multiply
    528,360.66x = 729,137.96 × 286,643.16
  4. Step 4: Simplify right side
    528,360.66x = 209,002,407,497.14
  5. Step 5: Solve for x
    x = 209,002,407,497.14/528,360.66
  6. Step 6: Final answer
    x = 395,567.69

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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.