Home / 1,638,187,849.80-2,457,281,774.70-947,739,702.60

Finding the Fourth Proportional to 1,638,187,849.80, 2,457,281,774.70 and 947,739,702.60

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Solution

The fourth proportional to 1,638,187,849.80, 2,457,281,774.70 and 947,739,702.60 is: 1,421,609,553.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638,187,849.80 : 2,457,281,774.70 = 947,739,702.60 : x
  2. Step 2: Convert to fraction form
    1,638,187,849.80/2,457,281,774.70 = 947,739,702.60/x
  3. Step 3: Cross multiply
    1,638,187,849.80x = 2,457,281,774.70 × 947,739,702.60
  4. Step 4: Simplify right side
    1,638,187,849.80x = 2,328,863,498,358,578,176
  5. Step 5: Solve for x
    x = 2,328,863,498,358,578,176/1,638,187,849.80
  6. Step 6: Final answer
    x = 1,421,609,553.90

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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.