Home / 402,787,374,035.72-555,848,833,880.40-229,172,509,280.85

Finding the Fourth Proportional to 402,787,374,035.72, 555,848,833,880.40 and 229,172,509,280.85

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Solution

The fourth proportional to 402,787,374,035.72, 555,848,833,880.40 and 229,172,509,280.85 is: 316,259,347,369.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,787,374,035.72 : 555,848,833,880.40 = 229,172,509,280.85 : x
  2. Step 2: Convert to fraction form
    402,787,374,035.72/555,848,833,880.40 = 229,172,509,280.85/x
  3. Step 3: Cross multiply
    402,787,374,035.72x = 555,848,833,880.40 × 229,172,509,280.85
  4. Step 4: Simplify right side
    402,787,374,035.72x = 127,385,272,041,205,619,752,960
  5. Step 5: Solve for x
    x = 127,385,272,041,205,619,752,960/402,787,374,035.72
  6. Step 6: Final answer
    x = 316,259,347,369.49

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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.