Home / 817,661.80-1,226,492.70-218,715.40

Finding the Fourth Proportional to 817,661.80, 1,226,492.70 and 218,715.40

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Solution

The fourth proportional to 817,661.80, 1,226,492.70 and 218,715.40 is: 328,073.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,661.80 : 1,226,492.70 = 218,715.40 : x
  2. Step 2: Convert to fraction form
    817,661.80/1,226,492.70 = 218,715.40/x
  3. Step 3: Cross multiply
    817,661.80x = 1,226,492.70 × 218,715.40
  4. Step 4: Simplify right side
    817,661.80x = 268,252,841,477.58
  5. Step 5: Solve for x
    x = 268,252,841,477.58/817,661.80
  6. Step 6: Final answer
    x = 328,073.10

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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.