Home / 715,678,866.90-1,073,398,715.14-198,161,621.10

Finding the Fourth Proportional to 715,678,866.90, 1,073,398,715.14 and 198,161,621.10

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Solution

The fourth proportional to 715,678,866.90, 1,073,398,715.14 and 198,161,621.10 is: 297,209,320.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,678,866.90 : 1,073,398,715.14 = 198,161,621.10 : x
  2. Step 2: Convert to fraction form
    715,678,866.90/1,073,398,715.14 = 198,161,621.10/x
  3. Step 3: Cross multiply
    715,678,866.90x = 1,073,398,715.14 × 198,161,621.10
  4. Step 4: Simplify right side
    715,678,866.90x = 212,706,429,478,799,520
  5. Step 5: Solve for x
    x = 212,706,429,478,799,520/715,678,866.90
  6. Step 6: Final answer
    x = 297,209,320.15

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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.