Home / 812,621.03-1,121,603.63-540,700.38

Finding the Fourth Proportional to 812,621.03, 1,121,603.63 and 540,700.38

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Solution

The fourth proportional to 812,621.03, 1,121,603.63 and 540,700.38 is: 746,290.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,621.03 : 1,121,603.63 = 540,700.38 : x
  2. Step 2: Convert to fraction form
    812,621.03/1,121,603.63 = 540,700.38/x
  3. Step 3: Cross multiply
    812,621.03x = 1,121,603.63 × 540,700.38
  4. Step 4: Simplify right side
    812,621.03x = 606,451,506,246.88
  5. Step 5: Solve for x
    x = 606,451,506,246.88/812,621.03
  6. Step 6: Final answer
    x = 746,290.69

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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.