Home / 912,646,458.32-1,368,872,640.44-257,581,288.40

Finding the Fourth Proportional to 912,646,458.32, 1,368,872,640.44 and 257,581,288.40

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Solution

The fourth proportional to 912,646,458.32, 1,368,872,640.44 and 257,581,288.40 is: 386,344,542.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,646,458.32 : 1,368,872,640.44 = 257,581,288.40 : x
  2. Step 2: Convert to fraction form
    912,646,458.32/1,368,872,640.44 = 257,581,288.40/x
  3. Step 3: Cross multiply
    912,646,458.32x = 1,368,872,640.44 × 257,581,288.40
  4. Step 4: Simplify right side
    912,646,458.32x = 352,595,978,380,045,184
  5. Step 5: Solve for x
    x = 352,595,978,380,045,184/912,646,458.32
  6. Step 6: Final answer
    x = 386,344,542.47

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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.