Home / 1,680,123,939.40-2,519,430,081.90-644,640,675.40

Finding the Fourth Proportional to 1,680,123,939.40, 2,519,430,081.90 and 644,640,675.40

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Solution

The fourth proportional to 1,680,123,939.40, 2,519,430,081.90 and 644,640,675.40 is: 966,671,012.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680,123,939.40 : 2,519,430,081.90 = 644,640,675.40 : x
  2. Step 2: Convert to fraction form
    1,680,123,939.40/2,519,430,081.90 = 644,640,675.40/x
  3. Step 3: Cross multiply
    1,680,123,939.40x = 2,519,430,081.90 × 644,640,675.40
  4. Step 4: Simplify right side
    1,680,123,939.40x = 1,624,127,109,619,093,248
  5. Step 5: Solve for x
    x = 1,624,127,109,619,093,248/1,680,123,939.40
  6. Step 6: Final answer
    x = 966,671,012.50

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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.