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Finding the Fourth Proportional to 528,031.60, 790,297.80 and 486,041.20

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Solution

The fourth proportional to 528,031.60, 790,297.80 and 486,041.20 is: 727,451.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,031.60 : 790,297.80 = 486,041.20 : x
  2. Step 2: Convert to fraction form
    528,031.60/790,297.80 = 486,041.20/x
  3. Step 3: Cross multiply
    528,031.60x = 790,297.80 × 486,041.20
  4. Step 4: Simplify right side
    528,031.60x = 384,117,291,069.36
  5. Step 5: Solve for x
    x = 384,117,291,069.36/528,031.60
  6. Step 6: Final answer
    x = 727,451.33

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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.