Home / 528,507.80-729,337.07-286,784.23

Finding the Fourth Proportional to 528,507.80, 729,337.07 and 286,784.23

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Solution

The fourth proportional to 528,507.80, 729,337.07 and 286,784.23 is: 395,760.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,507.80 : 729,337.07 = 286,784.23 : x
  2. Step 2: Convert to fraction form
    528,507.80/729,337.07 = 286,784.23/x
  3. Step 3: Cross multiply
    528,507.80x = 729,337.07 × 286,784.23
  4. Step 4: Simplify right side
    528,507.80x = 209,162,364,949.80
  5. Step 5: Solve for x
    x = 209,162,364,949.80/528,507.80
  6. Step 6: Final answer
    x = 395,760.22

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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.