Home / 528,588.20-729,452.28-286,870.88

Finding the Fourth Proportional to 528,588.20, 729,452.28 and 286,870.88

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Solution

The fourth proportional to 528,588.20, 729,452.28 and 286,870.88 is: 395,882.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,588.20 : 729,452.28 = 286,870.88 : x
  2. Step 2: Convert to fraction form
    528,588.20/729,452.28 = 286,870.88/x
  3. Step 3: Cross multiply
    528,588.20x = 729,452.28 × 286,870.88
  4. Step 4: Simplify right side
    528,588.20x = 209,258,617,481.61
  5. Step 5: Solve for x
    x = 209,258,617,481.61/528,588.20
  6. Step 6: Final answer
    x = 395,882.12

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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.