Home / 1,378,314,475.92-1,902,234,782.70-783,688,056.57

Finding the Fourth Proportional to 1,378,314,475.92, 1,902,234,782.70 and 783,688,056.57

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Solution

The fourth proportional to 1,378,314,475.92, 1,902,234,782.70 and 783,688,056.57 is: 1,081,580,949.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,314,475.92 : 1,902,234,782.70 = 783,688,056.57 : x
  2. Step 2: Convert to fraction form
    1,378,314,475.92/1,902,234,782.70 = 783,688,056.57/x
  3. Step 3: Cross multiply
    1,378,314,475.92x = 1,902,234,782.70 × 783,688,056.57
  4. Step 4: Simplify right side
    1,378,314,475.92x = 1,490,758,679,994,019,328
  5. Step 5: Solve for x
    x = 1,490,758,679,994,019,328/1,378,314,475.92
  6. Step 6: Final answer
    x = 1,081,580,949.80

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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.