Home / 921,264.60-1,271,328.30-518,856.60

Finding the Fourth Proportional to 921,264.60, 1,271,328.30 and 518,856.60

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Solution

The fourth proportional to 921,264.60, 1,271,328.30 and 518,856.60 is: 716,012.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,264.60 : 1,271,328.30 = 518,856.60 : x
  2. Step 2: Convert to fraction form
    921,264.60/1,271,328.30 = 518,856.60/x
  3. Step 3: Cross multiply
    921,264.60x = 1,271,328.30 × 518,856.60
  4. Step 4: Simplify right side
    921,264.60x = 659,637,079,221.78
  5. Step 5: Solve for x
    x = 659,637,079,221.78/921,264.60
  6. Step 6: Final answer
    x = 716,012.62

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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.