Home / 638,762,871.40-881,498,046.18-352,663,613.80

Finding the Fourth Proportional to 638,762,871.40, 881,498,046.18 and 352,663,613.80

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Solution

The fourth proportional to 638,762,871.40, 881,498,046.18 and 352,663,613.80 is: 486,678,704.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,762,871.40 : 881,498,046.18 = 352,663,613.80 : x
  2. Step 2: Convert to fraction form
    638,762,871.40/881,498,046.18 = 352,663,613.80/x
  3. Step 3: Cross multiply
    638,762,871.40x = 881,498,046.18 × 352,663,613.80
  4. Step 4: Simplify right side
    638,762,871.40x = 310,872,286,523,478,080
  5. Step 5: Solve for x
    x = 310,872,286,523,478,080/638,762,871.40
  6. Step 6: Final answer
    x = 486,678,704.17

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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.