Home / 642,897,478.70-964,442,043.51-228,339,471.71

Finding the Fourth Proportional to 642,897,478.70, 964,442,043.51 and 228,339,471.71

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Solution

The fourth proportional to 642,897,478.70, 964,442,043.51 and 228,339,471.71 is: 342,543,242.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,897,478.70 : 964,442,043.51 = 228,339,471.71 : x
  2. Step 2: Convert to fraction form
    642,897,478.70/964,442,043.51 = 228,339,471.71/x
  3. Step 3: Cross multiply
    642,897,478.70x = 964,442,043.51 × 228,339,471.71
  4. Step 4: Simplify right side
    642,897,478.70x = 220,220,186,712,824,352
  5. Step 5: Solve for x
    x = 220,220,186,712,824,352/642,897,478.70
  6. Step 6: Final answer
    x = 342,543,242.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.