Home / 805,128,768.60-1,206,984,564.90-545,502,125.40

Finding the Fourth Proportional to 805,128,768.60, 1,206,984,564.90 and 545,502,125.40

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Solution

The fourth proportional to 805,128,768.60, 1,206,984,564.90 and 545,502,125.40 is: 817,773,095.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,128,768.60 : 1,206,984,564.90 = 545,502,125.40 : x
  2. Step 2: Convert to fraction form
    805,128,768.60/1,206,984,564.90 = 545,502,125.40/x
  3. Step 3: Cross multiply
    805,128,768.60x = 1,206,984,564.90 × 545,502,125.40
  4. Step 4: Simplify right side
    805,128,768.60x = 658,412,645,477,944,320
  5. Step 5: Solve for x
    x = 658,412,645,477,944,320/805,128,768.60
  6. Step 6: Final answer
    x = 817,773,095.63

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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.