Home / 1,293,458,642.40-1,940,471,398.80-638,723,330.40

Finding the Fourth Proportional to 1,293,458,642.40, 1,940,471,398.80 and 638,723,330.40

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Solution

The fourth proportional to 1,293,458,642.40, 1,940,471,398.80 and 638,723,330.40 is: 958,224,958.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293,458,642.40 : 1,940,471,398.80 = 638,723,330.40 : x
  2. Step 2: Convert to fraction form
    1,293,458,642.40/1,940,471,398.80 = 638,723,330.40/x
  3. Step 3: Cross multiply
    1,293,458,642.40x = 1,940,471,398.80 × 638,723,330.40
  4. Step 4: Simplify right side
    1,293,458,642.40x = 1,239,424,354,387,482,368
  5. Step 5: Solve for x
    x = 1,239,424,354,387,482,368/1,293,458,642.40
  6. Step 6: Final answer
    x = 958,224,958.85

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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.