Home / 488,946.75-674,748.95-285,139.01

Finding the Fourth Proportional to 488,946.75, 674,748.95 and 285,139.01

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Solution

The fourth proportional to 488,946.75, 674,748.95 and 285,139.01 is: 393,493.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,946.75 : 674,748.95 = 285,139.01 : x
  2. Step 2: Convert to fraction form
    488,946.75/674,748.95 = 285,139.01/x
  3. Step 3: Cross multiply
    488,946.75x = 674,748.95 × 285,139.01
  4. Step 4: Simplify right side
    488,946.75x = 192,397,242,802.10
  5. Step 5: Solve for x
    x = 192,397,242,802.10/488,946.75
  6. Step 6: Final answer
    x = 393,493.24

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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.