Home / 804,520.30-1,109,920.58-518,206.57

Finding the Fourth Proportional to 804,520.30, 1,109,920.58 and 518,206.57

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Solution

The fourth proportional to 804,520.30, 1,109,920.58 and 518,206.57 is: 714,920.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,520.30 : 1,109,920.58 = 518,206.57 : x
  2. Step 2: Convert to fraction form
    804,520.30/1,109,920.58 = 518,206.57/x
  3. Step 3: Cross multiply
    804,520.30x = 1,109,920.58 × 518,206.57
  4. Step 4: Simplify right side
    804,520.30x = 575,168,136,734.21
  5. Step 5: Solve for x
    x = 575,168,136,734.21/804,520.30
  6. Step 6: Final answer
    x = 714,920.60

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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.