Home / 979,820.48-1,469,352.86-380,702.76

Finding the Fourth Proportional to 979,820.48, 1,469,352.86 and 380,702.76

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Solution

The fourth proportional to 979,820.48, 1,469,352.86 and 380,702.76 is: 570,907.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,820.48 : 1,469,352.86 = 380,702.76 : x
  2. Step 2: Convert to fraction form
    979,820.48/1,469,352.86 = 380,702.76/x
  3. Step 3: Cross multiply
    979,820.48x = 1,469,352.86 × 380,702.76
  4. Step 4: Simplify right side
    979,820.48x = 559,386,689,215.89
  5. Step 5: Solve for x
    x = 559,386,689,215.89/979,820.48
  6. Step 6: Final answer
    x = 570,907.32

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1.5x scale

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.