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Finding the Fourth Proportional to 522,467.60, 720,457.80 and 386,786.12

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Solution

The fourth proportional to 522,467.60, 720,457.80 and 386,786.12 is: 533,359.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,467.60 : 720,457.80 = 386,786.12 : x
  2. Step 2: Convert to fraction form
    522,467.60/720,457.80 = 386,786.12/x
  3. Step 3: Cross multiply
    522,467.60x = 720,457.80 × 386,786.12
  4. Step 4: Simplify right side
    522,467.60x = 278,663,077,085.74
  5. Step 5: Solve for x
    x = 278,663,077,085.74/522,467.60
  6. Step 6: Final answer
    x = 533,359.54

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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.