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Finding the Fourth Proportional to 958,608,901.80, 1,437,913,352.70 and 786,280,300.20

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Solution

The fourth proportional to 958,608,901.80, 1,437,913,352.70 and 786,280,300.20 is: 1,179,420,450.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    958,608,901.80 : 1,437,913,352.70 = 786,280,300.20 : x
  2. Step 2: Convert to fraction form
    958,608,901.80/1,437,913,352.70 = 786,280,300.20/x
  3. Step 3: Cross multiply
    958,608,901.80x = 1,437,913,352.70 × 786,280,300.20
  4. Step 4: Simplify right side
    958,608,901.80x = 1,130,602,942,622,544,640
  5. Step 5: Solve for x
    x = 1,130,602,942,622,544,640/958,608,901.80
  6. Step 6: Final answer
    x = 1,179,420,450.30

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1.5x scale

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.