Home / 817,647.63-1,128,390.90-455,094.72

Finding the Fourth Proportional to 817,647.63, 1,128,390.90 and 455,094.72

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Solution

The fourth proportional to 817,647.63, 1,128,390.90 and 455,094.72 is: 628,051.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,647.63 : 1,128,390.90 = 455,094.72 : x
  2. Step 2: Convert to fraction form
    817,647.63/1,128,390.90 = 455,094.72/x
  3. Step 3: Cross multiply
    817,647.63x = 1,128,390.90 × 455,094.72
  4. Step 4: Simplify right side
    817,647.63x = 513,524,740,686.05
  5. Step 5: Solve for x
    x = 513,524,740,686.05/817,647.63
  6. Step 6: Final answer
    x = 628,051.40

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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.