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Finding the Fourth Proportional to 528,587.60, 729,456.24 and 286,872.32

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Solution

The fourth proportional to 528,587.60, 729,456.24 and 286,872.32 is: 395,886.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,587.60 : 729,456.24 = 286,872.32 : x
  2. Step 2: Convert to fraction form
    528,587.60/729,456.24 = 286,872.32/x
  3. Step 3: Cross multiply
    528,587.60x = 729,456.24 × 286,872.32
  4. Step 4: Simplify right side
    528,587.60x = 209,260,803,907.28
  5. Step 5: Solve for x
    x = 209,260,803,907.28/528,587.60
  6. Step 6: Final answer
    x = 395,886.71

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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.