Home / 386,051.40-579,077.10-260,080.20

Finding the Fourth Proportional to 386,051.40, 579,077.10 and 260,080.20

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Solution

The fourth proportional to 386,051.40, 579,077.10 and 260,080.20 is: 390,120.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,051.40 : 579,077.10 = 260,080.20 : x
  2. Step 2: Convert to fraction form
    386,051.40/579,077.10 = 260,080.20/x
  3. Step 3: Cross multiply
    386,051.40x = 579,077.10 × 260,080.20
  4. Step 4: Simplify right side
    386,051.40x = 150,606,487,983.42
  5. Step 5: Solve for x
    x = 150,606,487,983.42/386,051.40
  6. Step 6: Final answer
    x = 390,120.30

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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.