Home / 867,118,725.12-1,196,620,809.80-470,641,692.94

Finding the Fourth Proportional to 867,118,725.12, 1,196,620,809.80 and 470,641,692.94

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Solution

The fourth proportional to 867,118,725.12, 1,196,620,809.80 and 470,641,692.94 is: 649,483,891.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,118,725.12 : 1,196,620,809.80 = 470,641,692.94 : x
  2. Step 2: Convert to fraction form
    867,118,725.12/1,196,620,809.80 = 470,641,692.94/x
  3. Step 3: Cross multiply
    867,118,725.12x = 1,196,620,809.80 × 470,641,692.94
  4. Step 4: Simplify right side
    867,118,725.12x = 563,179,643,731,505,728
  5. Step 5: Solve for x
    x = 563,179,643,731,505,728/867,118,725.12
  6. Step 6: Final answer
    x = 649,483,891.21

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1.5x scale

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.