Home / 516,228,829.12-712,386,814.64-281,281,420.23

Finding the Fourth Proportional to 516,228,829.12, 712,386,814.64 and 281,281,420.23

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Solution

The fourth proportional to 516,228,829.12, 712,386,814.64 and 281,281,420.23 is: 388,163,472.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,228,829.12 : 712,386,814.64 = 281,281,420.23 : x
  2. Step 2: Convert to fraction form
    516,228,829.12/712,386,814.64 = 281,281,420.23/x
  3. Step 3: Cross multiply
    516,228,829.12x = 712,386,814.64 × 281,281,420.23
  4. Step 4: Simplify right side
    516,228,829.12x = 200,381,174,975,064,960
  5. Step 5: Solve for x
    x = 200,381,174,975,064,960/516,228,829.12
  6. Step 6: Final answer
    x = 388,163,472.61

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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.