Home / 1,120,005.72-1,680,014.64-278,557.46

Finding the Fourth Proportional to 1,120,005.72, 1,680,014.64 and 278,557.46

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Solution

The fourth proportional to 1,120,005.72, 1,680,014.64 and 278,557.46 is: 417,837.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,005.72 : 1,680,014.64 = 278,557.46 : x
  2. Step 2: Convert to fraction form
    1,120,005.72/1,680,014.64 = 278,557.46/x
  3. Step 3: Cross multiply
    1,120,005.72x = 1,680,014.64 × 278,557.46
  4. Step 4: Simplify right side
    1,120,005.72x = 467,980,610,881.21
  5. Step 5: Solve for x
    x = 467,980,610,881.21/1,120,005.72
  6. Step 6: Final answer
    x = 417,837.70

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1.5x scale

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.