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Finding the Fourth Proportional to 1,223,669.63, 1,688,711.49 and 837,294.98

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Solution

The fourth proportional to 1,223,669.63, 1,688,711.49 and 837,294.98 is: 1,155,499.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,669.63 : 1,688,711.49 = 837,294.98 : x
  2. Step 2: Convert to fraction form
    1,223,669.63/1,688,711.49 = 837,294.98/x
  3. Step 3: Cross multiply
    1,223,669.63x = 1,688,711.49 × 837,294.98
  4. Step 4: Simplify right side
    1,223,669.63x = 1,413,949,644,801.76
  5. Step 5: Solve for x
    x = 1,413,949,644,801.76/1,223,669.63
  6. Step 6: Final answer
    x = 1,155,499.50

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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.