Home / 645,926.05-891,373.57-355,554.82

Finding the Fourth Proportional to 645,926.05, 891,373.57 and 355,554.82

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Solution

The fourth proportional to 645,926.05, 891,373.57 and 355,554.82 is: 490,663.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,926.05 : 891,373.57 = 355,554.82 : x
  2. Step 2: Convert to fraction form
    645,926.05/891,373.57 = 355,554.82/x
  3. Step 3: Cross multiply
    645,926.05x = 891,373.57 × 355,554.82
  4. Step 4: Simplify right side
    645,926.05x = 316,932,169,234.11
  5. Step 5: Solve for x
    x = 316,932,169,234.11/645,926.05
  6. Step 6: Final answer
    x = 490,663.24

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1.5x scale

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.