Home / 528,932.72-729,924.48-287,213.18

Finding the Fourth Proportional to 528,932.72, 729,924.48 and 287,213.18

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Solution

The fourth proportional to 528,932.72, 729,924.48 and 287,213.18 is: 396,352.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,932.72 : 729,924.48 = 287,213.18 : x
  2. Step 2: Convert to fraction form
    528,932.72/729,924.48 = 287,213.18/x
  3. Step 3: Cross multiply
    528,932.72x = 729,924.48 × 287,213.18
  4. Step 4: Simplify right side
    528,932.72x = 209,643,931,060.65
  5. Step 5: Solve for x
    x = 209,643,931,060.65/528,932.72
  6. Step 6: Final answer
    x = 396,352.74

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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.