Home / 1,680,647.72-2,319,293.86-916,701.28

Finding the Fourth Proportional to 1,680,647.72, 2,319,293.86 and 916,701.28

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Solution

The fourth proportional to 1,680,647.72, 2,319,293.86 and 916,701.28 is: 1,265,047.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680,647.72 : 2,319,293.86 = 916,701.28 : x
  2. Step 2: Convert to fraction form
    1,680,647.72/2,319,293.86 = 916,701.28/x
  3. Step 3: Cross multiply
    1,680,647.72x = 2,319,293.86 × 916,701.28
  4. Step 4: Simplify right side
    1,680,647.72x = 2,126,099,650,158.14
  5. Step 5: Solve for x
    x = 2,126,099,650,158.14/1,680,647.72
  6. Step 6: Final answer
    x = 1,265,047.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.