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Finding the Fourth Proportional to 612,454.92, 917,746.82 and 257,274.76

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Solution

The fourth proportional to 612,454.92, 917,746.82 and 257,274.76 is: 385,519.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,454.92 : 917,746.82 = 257,274.76 : x
  2. Step 2: Convert to fraction form
    612,454.92/917,746.82 = 257,274.76/x
  3. Step 3: Cross multiply
    612,454.92x = 917,746.82 × 257,274.76
  4. Step 4: Simplify right side
    612,454.92x = 236,113,092,856.26
  5. Step 5: Solve for x
    x = 236,113,092,856.26/612,454.92
  6. Step 6: Final answer
    x = 385,519.14

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1.5x scale

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.