Home / 1,078,272,078.30-1,617,408,117.45-432,503,271.90

Finding the Fourth Proportional to 1,078,272,078.30, 1,617,408,117.45 and 432,503,271.90

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Solution

The fourth proportional to 1,078,272,078.30, 1,617,408,117.45 and 432,503,271.90 is: 648,754,907.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,272,078.30 : 1,617,408,117.45 = 432,503,271.90 : x
  2. Step 2: Convert to fraction form
    1,078,272,078.30/1,617,408,117.45 = 432,503,271.90/x
  3. Step 3: Cross multiply
    1,078,272,078.30x = 1,617,408,117.45 × 432,503,271.90
  4. Step 4: Simplify right side
    1,078,272,078.30x = 699,534,302,794,744,448
  5. Step 5: Solve for x
    x = 699,534,302,794,744,448/1,078,272,078.30
  6. Step 6: Final answer
    x = 648,754,907.85

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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.