Home / 851,884.60-1,276,077.30-431,397.40

Finding the Fourth Proportional to 851,884.60, 1,276,077.30 and 431,397.40

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Solution

The fourth proportional to 851,884.60, 1,276,077.30 and 431,397.40 is: 646,210.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,884.60 : 1,276,077.30 = 431,397.40 : x
  2. Step 2: Convert to fraction form
    851,884.60/1,276,077.30 = 431,397.40/x
  3. Step 3: Cross multiply
    851,884.60x = 1,276,077.30 × 431,397.40
  4. Step 4: Simplify right side
    851,884.60x = 550,496,429,419.02
  5. Step 5: Solve for x
    x = 550,496,429,419.02/851,884.60
  6. Step 6: Final answer
    x = 646,210.10

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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.