Home / 839,809,325.70-1,259,713,988.55-664,457,415.30

Finding the Fourth Proportional to 839,809,325.70, 1,259,713,988.55 and 664,457,415.30

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Solution

The fourth proportional to 839,809,325.70, 1,259,713,988.55 and 664,457,415.30 is: 996,686,122.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,809,325.70 : 1,259,713,988.55 = 664,457,415.30 : x
  2. Step 2: Convert to fraction form
    839,809,325.70/1,259,713,988.55 = 664,457,415.30/x
  3. Step 3: Cross multiply
    839,809,325.70x = 1,259,713,988.55 × 664,457,415.30
  4. Step 4: Simplify right side
    839,809,325.70x = 837,026,300,849,186,688
  5. Step 5: Solve for x
    x = 837,026,300,849,186,688/839,809,325.70
  6. Step 6: Final answer
    x = 996,686,122.95

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Double scale
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Similar ratio
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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.