Home / 678,180,195.90-1,015,908,240.78-309,207,598.65

Finding the Fourth Proportional to 678,180,195.90, 1,015,908,240.78 and 309,207,598.65

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Solution

The fourth proportional to 678,180,195.90, 1,015,908,240.78 and 309,207,598.65 is: 463,190,387.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,180,195.90 : 1,015,908,240.78 = 309,207,598.65 : x
  2. Step 2: Convert to fraction form
    678,180,195.90/1,015,908,240.78 = 309,207,598.65/x
  3. Step 3: Cross multiply
    678,180,195.90x = 1,015,908,240.78 × 309,207,598.65
  4. Step 4: Simplify right side
    678,180,195.90x = 314,126,547,580,329,792
  5. Step 5: Solve for x
    x = 314,126,547,580,329,792/678,180,195.90
  6. Step 6: Final answer
    x = 463,190,387.27

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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.