Home / 815,426,488.80-1,223,139,733.20-509,661,727.20

Finding the Fourth Proportional to 815,426,488.80, 1,223,139,733.20 and 509,661,727.20

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Solution

The fourth proportional to 815,426,488.80, 1,223,139,733.20 and 509,661,727.20 is: 764,492,590.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,426,488.80 : 1,223,139,733.20 = 509,661,727.20 : x
  2. Step 2: Convert to fraction form
    815,426,488.80/1,223,139,733.20 = 509,661,727.20/x
  3. Step 3: Cross multiply
    815,426,488.80x = 1,223,139,733.20 × 509,661,727.20
  4. Step 4: Simplify right side
    815,426,488.80x = 623,387,509,029,659,136
  5. Step 5: Solve for x
    x = 623,387,509,029,659,136/815,426,488.80
  6. Step 6: Final answer
    x = 764,492,590.80

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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.