Home / 909,169,323.86-1,363,802,668.42-287,337,251.90

Finding the Fourth Proportional to 909,169,323.86, 1,363,802,668.42 and 287,337,251.90

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Solution

The fourth proportional to 909,169,323.86, 1,363,802,668.42 and 287,337,251.90 is: 431,021,263.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,169,323.86 : 1,363,802,668.42 = 287,337,251.90 : x
  2. Step 2: Convert to fraction form
    909,169,323.86/1,363,802,668.42 = 287,337,251.90/x
  3. Step 3: Cross multiply
    909,169,323.86x = 1,363,802,668.42 × 287,337,251.90
  4. Step 4: Simplify right side
    909,169,323.86x = 391,871,310,877,689,728
  5. Step 5: Solve for x
    x = 391,871,310,877,689,728/909,169,323.86
  6. Step 6: Final answer
    x = 431,021,263.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.