Home / 687,713,726.40-1,031,570,589.60-470,035,492.80

Finding the Fourth Proportional to 687,713,726.40, 1,031,570,589.60 and 470,035,492.80

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Solution

The fourth proportional to 687,713,726.40, 1,031,570,589.60 and 470,035,492.80 is: 705,053,239.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,713,726.40 : 1,031,570,589.60 = 470,035,492.80 : x
  2. Step 2: Convert to fraction form
    687,713,726.40/1,031,570,589.60 = 470,035,492.80/x
  3. Step 3: Cross multiply
    687,713,726.40x = 1,031,570,589.60 × 470,035,492.80
  4. Step 4: Simplify right side
    687,713,726.40x = 484,874,790,440,622,592
  5. Step 5: Solve for x
    x = 484,874,790,440,622,592/687,713,726.40
  6. Step 6: Final answer
    x = 705,053,239.20

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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.