Home / 780,037.20-1,170,055.80-479,543.40

Finding the Fourth Proportional to 780,037.20, 1,170,055.80 and 479,543.40

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Solution

The fourth proportional to 780,037.20, 1,170,055.80 and 479,543.40 is: 719,315.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,037.20 : 1,170,055.80 = 479,543.40 : x
  2. Step 2: Convert to fraction form
    780,037.20/1,170,055.80 = 479,543.40/x
  3. Step 3: Cross multiply
    780,037.20x = 1,170,055.80 × 479,543.40
  4. Step 4: Simplify right side
    780,037.20x = 561,092,536,521.72
  5. Step 5: Solve for x
    x = 561,092,536,521.72/780,037.20
  6. Step 6: Final answer
    x = 719,315.10

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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.