Home / 528,021.60-790,282.80-486,031.20

Finding the Fourth Proportional to 528,021.60, 790,282.80 and 486,031.20

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Solution

The fourth proportional to 528,021.60, 790,282.80 and 486,031.20 is: 727,436.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,021.60 : 790,282.80 = 486,031.20 : x
  2. Step 2: Convert to fraction form
    528,021.60/790,282.80 = 486,031.20/x
  3. Step 3: Cross multiply
    528,021.60x = 790,282.80 × 486,031.20
  4. Step 4: Simplify right side
    528,021.60x = 384,102,097,623.36
  5. Step 5: Solve for x
    x = 384,102,097,623.36/528,021.60
  6. Step 6: Final answer
    x = 727,436.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.