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Finding the Fourth Proportional to 877,137, 1,210,478.40 and 537,539.64

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Solution

The fourth proportional to 877,137, 1,210,478.40 and 537,539.64 is: 741,822.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,137 : 1,210,478.40 = 537,539.64 : x
  2. Step 2: Convert to fraction form
    877,137/1,210,478.40 = 537,539.64/x
  3. Step 3: Cross multiply
    877,137x = 1,210,478.40 × 537,539.64
  4. Step 4: Simplify right side
    877,137x = 650,680,123,363.78
  5. Step 5: Solve for x
    x = 650,680,123,363.78/877,137
  6. Step 6: Final answer
    x = 741,822.68

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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.