Home / 1,276,662.40-1,911,307.20-778,998.40

Finding the Fourth Proportional to 1,276,662.40, 1,911,307.20 and 778,998.40

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Solution

The fourth proportional to 1,276,662.40, 1,911,307.20 and 778,998.40 is: 1,166,248.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,662.40 : 1,911,307.20 = 778,998.40 : x
  2. Step 2: Convert to fraction form
    1,276,662.40/1,911,307.20 = 778,998.40/x
  3. Step 3: Cross multiply
    1,276,662.40x = 1,911,307.20 × 778,998.40
  4. Step 4: Simplify right side
    1,276,662.40x = 1,488,905,250,708.48
  5. Step 5: Solve for x
    x = 1,488,905,250,708.48/1,276,662.40
  6. Step 6: Final answer
    x = 1,166,248.22

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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.