Home / 448,276,876.40-618,820,454.92-289,584,375.72

Finding the Fourth Proportional to 448,276,876.40, 618,820,454.92 and 289,584,375.72

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Solution

The fourth proportional to 448,276,876.40, 618,820,454.92 and 289,584,375.72 is: 399,754,581.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,276,876.40 : 618,820,454.92 = 289,584,375.72 : x
  2. Step 2: Convert to fraction form
    448,276,876.40/618,820,454.92 = 289,584,375.72/x
  3. Step 3: Cross multiply
    448,276,876.40x = 618,820,454.92 × 289,584,375.72
  4. Step 4: Simplify right side
    448,276,876.40x = 179,200,735,120,774,592
  5. Step 5: Solve for x
    x = 179,200,735,120,774,592/448,276,876.40
  6. Step 6: Final answer
    x = 399,754,581.50

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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.