Home / 817,678.63-1,226,421.35-218,686.22

Finding the Fourth Proportional to 817,678.63, 1,226,421.35 and 218,686.22

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Solution

The fourth proportional to 817,678.63, 1,226,421.35 and 218,686.22 is: 328,003.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,678.63 : 1,226,421.35 = 218,686.22 : x
  2. Step 2: Convert to fraction form
    817,678.63/1,226,421.35 = 218,686.22/x
  3. Step 3: Cross multiply
    817,678.63x = 1,226,421.35 × 218,686.22
  4. Step 4: Simplify right side
    817,678.63x = 268,201,449,158.80
  5. Step 5: Solve for x
    x = 268,201,449,158.80/817,678.63
  6. Step 6: Final answer
    x = 328,003.50

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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.