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Finding the Fourth Proportional to 877,800, 1,211,364 and 475,392

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Solution

The fourth proportional to 877,800, 1,211,364 and 475,392 is: 656,040.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,800 : 1,211,364 = 475,392 : x
  2. Step 2: Convert to fraction form
    877,800/1,211,364 = 475,392/x
  3. Step 3: Cross multiply
    877,800x = 1,211,364 × 475,392
  4. Step 4: Simplify right side
    877,800x = 575,872,754,688
  5. Step 5: Solve for x
    x = 575,872,754,688/877,800
  6. Step 6: Final answer
    x = 656,040.96

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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.