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Finding the Fourth Proportional to 877,710, 1,211,239.80 and 475,302

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Solution

The fourth proportional to 877,710, 1,211,239.80 and 475,302 is: 655,916.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,710 : 1,211,239.80 = 475,302 : x
  2. Step 2: Convert to fraction form
    877,710/1,211,239.80 = 475,302/x
  3. Step 3: Cross multiply
    877,710x = 1,211,239.80 × 475,302
  4. Step 4: Simplify right side
    877,710x = 575,704,699,419.60
  5. Step 5: Solve for x
    x = 575,704,699,419.60/877,710
  6. Step 6: Final answer
    x = 655,916.76

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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.