Home / 1,387,930,921.86-1,915,333,335.74-752,849,823.94

Finding the Fourth Proportional to 1,387,930,921.86, 1,915,333,335.74 and 752,849,823.94

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Solution

The fourth proportional to 1,387,930,921.86, 1,915,333,335.74 and 752,849,823.94 is: 1,038,926,607.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,930,921.86 : 1,915,333,335.74 = 752,849,823.94 : x
  2. Step 2: Convert to fraction form
    1,387,930,921.86/1,915,333,335.74 = 752,849,823.94/x
  3. Step 3: Cross multiply
    1,387,930,921.86x = 1,915,333,335.74 × 752,849,823.94
  4. Step 4: Simplify right side
    1,387,930,921.86x = 1,441,958,364,595,365,632
  5. Step 5: Solve for x
    x = 1,441,958,364,595,365,632/1,387,930,921.86
  6. Step 6: Final answer
    x = 1,038,926,607.86

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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.