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Finding the Fourth Proportional to 478,735.52, 660,607.35 and 285,104.91

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Solution

The fourth proportional to 478,735.52, 660,607.35 and 285,104.91 is: 393,416.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,735.52 : 660,607.35 = 285,104.91 : x
  2. Step 2: Convert to fraction form
    478,735.52/660,607.35 = 285,104.91/x
  3. Step 3: Cross multiply
    478,735.52x = 660,607.35 × 285,104.91
  4. Step 4: Simplify right side
    478,735.52x = 188,342,400,475.22
  5. Step 5: Solve for x
    x = 188,342,400,475.22/478,735.52
  6. Step 6: Final answer
    x = 393,416.40

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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.