Home / 1,127,330.80-1,687,059.60-788,783.20

Finding the Fourth Proportional to 1,127,330.80, 1,687,059.60 and 788,783.20

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Solution

The fourth proportional to 1,127,330.80, 1,687,059.60 and 788,783.20 is: 1,180,420.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127,330.80 : 1,687,059.60 = 788,783.20 : x
  2. Step 2: Convert to fraction form
    1,127,330.80/1,687,059.60 = 788,783.20/x
  3. Step 3: Cross multiply
    1,127,330.80x = 1,687,059.60 × 788,783.20
  4. Step 4: Simplify right side
    1,127,330.80x = 1,330,724,269,878.72
  5. Step 5: Solve for x
    x = 1,330,724,269,878.72/1,127,330.80
  6. Step 6: Final answer
    x = 1,180,420.40

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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.