Home / 858,390,951.20-1,287,586,426.80-313,150,272.80

Finding the Fourth Proportional to 858,390,951.20, 1,287,586,426.80 and 313,150,272.80

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Solution

The fourth proportional to 858,390,951.20, 1,287,586,426.80 and 313,150,272.80 is: 469,725,409.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,390,951.20 : 1,287,586,426.80 = 313,150,272.80 : x
  2. Step 2: Convert to fraction form
    858,390,951.20/1,287,586,426.80 = 313,150,272.80/x
  3. Step 3: Cross multiply
    858,390,951.20x = 1,287,586,426.80 × 313,150,272.80
  4. Step 4: Simplify right side
    858,390,951.20x = 403,208,040,805,997,248
  5. Step 5: Solve for x
    x = 403,208,040,805,997,248/858,390,951.20
  6. Step 6: Final answer
    x = 469,725,409.20

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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.