Home / 643,316.22-963,756.25-429,439.16

Finding the Fourth Proportional to 643,316.22, 963,756.25 and 429,439.16

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Solution

The fourth proportional to 643,316.22, 963,756.25 and 429,439.16 is: 643,345.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,316.22 : 963,756.25 = 429,439.16 : x
  2. Step 2: Convert to fraction form
    643,316.22/963,756.25 = 429,439.16/x
  3. Step 3: Cross multiply
    643,316.22x = 963,756.25 × 429,439.16
  4. Step 4: Simplify right side
    643,316.22x = 413,874,678,196.14
  5. Step 5: Solve for x
    x = 413,874,678,196.14/643,316.22
  6. Step 6: Final answer
    x = 643,345.63

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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.