Home / 780,046.80-1,170,070.20-543,656.40

Finding the Fourth Proportional to 780,046.80, 1,170,070.20 and 543,656.40

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Solution

The fourth proportional to 780,046.80, 1,170,070.20 and 543,656.40 is: 815,484.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,046.80 : 1,170,070.20 = 543,656.40 : x
  2. Step 2: Convert to fraction form
    780,046.80/1,170,070.20 = 543,656.40/x
  3. Step 3: Cross multiply
    780,046.80x = 1,170,070.20 × 543,656.40
  4. Step 4: Simplify right side
    780,046.80x = 636,116,152,679.28
  5. Step 5: Solve for x
    x = 636,116,152,679.28/780,046.80
  6. Step 6: Final answer
    x = 815,484.60

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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.