Home / 921,493.89-1,271,735.51-513,727.74

Finding the Fourth Proportional to 921,493.89, 1,271,735.51 and 513,727.74

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Solution

The fourth proportional to 921,493.89, 1,271,735.51 and 513,727.74 is: 708,985.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,493.89 : 1,271,735.51 = 513,727.74 : x
  2. Step 2: Convert to fraction form
    921,493.89/1,271,735.51 = 513,727.74/x
  3. Step 3: Cross multiply
    921,493.89x = 1,271,735.51 × 513,727.74
  4. Step 4: Simplify right side
    921,493.89x = 653,325,806,861.41
  5. Step 5: Solve for x
    x = 653,325,806,861.41/921,493.89
  6. Step 6: Final answer
    x = 708,985.50

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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.