Home / 638,762,872.40-881,498,047.56-352,663,614.80

Finding the Fourth Proportional to 638,762,872.40, 881,498,047.56 and 352,663,614.80

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Solution

The fourth proportional to 638,762,872.40, 881,498,047.56 and 352,663,614.80 is: 486,678,705.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,762,872.40 : 881,498,047.56 = 352,663,614.80 : x
  2. Step 2: Convert to fraction form
    638,762,872.40/881,498,047.56 = 352,663,614.80/x
  3. Step 3: Cross multiply
    638,762,872.40x = 881,498,047.56 × 352,663,614.80
  4. Step 4: Simplify right side
    638,762,872.40x = 310,872,287,891,651,904
  5. Step 5: Solve for x
    x = 310,872,287,891,651,904/638,762,872.40
  6. Step 6: Final answer
    x = 486,678,705.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.