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Finding the Fourth Proportional to 561,865,890.94, 775,376,588.40 and 310,987,707.70

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Solution

The fourth proportional to 561,865,890.94, 775,376,588.40 and 310,987,707.70 is: 429,163,954.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,865,890.94 : 775,376,588.40 = 310,987,707.70 : x
  2. Step 2: Convert to fraction form
    561,865,890.94/775,376,588.40 = 310,987,707.70/x
  3. Step 3: Cross multiply
    561,865,890.94x = 775,376,588.40 × 310,987,707.70
  4. Step 4: Simplify right side
    561,865,890.94x = 241,132,587,830,762,400
  5. Step 5: Solve for x
    x = 241,132,587,830,762,400/561,865,890.94
  6. Step 6: Final answer
    x = 429,163,954.81

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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.