Home / 1,385,851,803.57-1,912,004,671.52-790,708,742.37

Finding the Fourth Proportional to 1,385,851,803.57, 1,912,004,671.52 and 790,708,742.37

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Solution

The fourth proportional to 1,385,851,803.57, 1,912,004,671.52 and 790,708,742.37 is: 1,090,909,435.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,851,803.57 : 1,912,004,671.52 = 790,708,742.37 : x
  2. Step 2: Convert to fraction form
    1,385,851,803.57/1,912,004,671.52 = 790,708,742.37/x
  3. Step 3: Cross multiply
    1,385,851,803.57x = 1,912,004,671.52 × 790,708,742.37
  4. Step 4: Simplify right side
    1,385,851,803.57x = 1,511,838,809,219,190,784
  5. Step 5: Solve for x
    x = 1,511,838,809,219,190,784/1,385,851,803.57
  6. Step 6: Final answer
    x = 1,090,909,435.86

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Double scale
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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.