Home / 813,038.95-1,121,979.18-450,455.52

Finding the Fourth Proportional to 813,038.95, 1,121,979.18 and 450,455.52

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Solution

The fourth proportional to 813,038.95, 1,121,979.18 and 450,455.52 is: 621,620.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,038.95 : 1,121,979.18 = 450,455.52 : x
  2. Step 2: Convert to fraction form
    813,038.95/1,121,979.18 = 450,455.52/x
  3. Step 3: Cross multiply
    813,038.95x = 1,121,979.18 × 450,455.52
  4. Step 4: Simplify right side
    813,038.95x = 505,401,714,956.07
  5. Step 5: Solve for x
    x = 505,401,714,956.07/813,038.95
  6. Step 6: Final answer
    x = 621,620.54

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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.