Home / 912,479,389.67-1,368,172,487.86-290,425,927.43

Finding the Fourth Proportional to 912,479,389.67, 1,368,172,487.86 and 290,425,927.43

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Solution

The fourth proportional to 912,479,389.67, 1,368,172,487.86 and 290,425,927.43 is: 435,464,919.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,479,389.67 : 1,368,172,487.86 = 290,425,927.43 : x
  2. Step 2: Convert to fraction form
    912,479,389.67/1,368,172,487.86 = 290,425,927.43/x
  3. Step 3: Cross multiply
    912,479,389.67x = 1,368,172,487.86 × 290,425,927.43
  4. Step 4: Simplify right side
    912,479,389.67x = 397,352,763,673,645,312
  5. Step 5: Solve for x
    x = 397,352,763,673,645,312/912,479,389.67
  6. Step 6: Final answer
    x = 435,464,919.18

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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.