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Finding the Fourth Proportional to 680,038.66, 938,434.51 and 369,930.93

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Solution

The fourth proportional to 680,038.66, 938,434.51 and 369,930.93 is: 510,494.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,038.66 : 938,434.51 = 369,930.93 : x
  2. Step 2: Convert to fraction form
    680,038.66/938,434.51 = 369,930.93/x
  3. Step 3: Cross multiply
    680,038.66x = 938,434.51 × 369,930.93
  4. Step 4: Simplify right side
    680,038.66x = 347,155,953,250.37
  5. Step 5: Solve for x
    x = 347,155,953,250.37/680,038.66
  6. Step 6: Final answer
    x = 510,494.44

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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.