Home / 851,277.80-1,276,268.70-430,855.40

Finding the Fourth Proportional to 851,277.80, 1,276,268.70 and 430,855.40

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Solution

The fourth proportional to 851,277.80, 1,276,268.70 and 430,855.40 is: 645,955.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,277.80 : 1,276,268.70 = 430,855.40 : x
  2. Step 2: Convert to fraction form
    851,277.80/1,276,268.70 = 430,855.40/x
  3. Step 3: Cross multiply
    851,277.80x = 1,276,268.70 × 430,855.40
  4. Step 4: Simplify right side
    851,277.80x = 549,887,261,245.98
  5. Step 5: Solve for x
    x = 549,887,261,245.98/851,277.80
  6. Step 6: Final answer
    x = 645,955.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.