Home / 851,244.80-1,276,219.20-430,822.40

Finding the Fourth Proportional to 851,244.80, 1,276,219.20 and 430,822.40

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Solution

The fourth proportional to 851,244.80, 1,276,219.20 and 430,822.40 is: 645,905.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,244.80 : 1,276,219.20 = 430,822.40 : x
  2. Step 2: Convert to fraction form
    851,244.80/1,276,219.20 = 430,822.40/x
  3. Step 3: Cross multiply
    851,244.80x = 1,276,219.20 × 430,822.40
  4. Step 4: Simplify right side
    851,244.80x = 549,823,818,670.08
  5. Step 5: Solve for x
    x = 549,823,818,670.08/851,244.80
  6. Step 6: Final answer
    x = 645,905.64

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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.