Home / 800,415,566.76-1,103,696,345.70-521,439,747.24

Finding the Fourth Proportional to 800,415,566.76, 1,103,696,345.70 and 521,439,747.24

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Solution

The fourth proportional to 800,415,566.76, 1,103,696,345.70 and 521,439,747.24 is: 719,015,430.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,415,566.76 : 1,103,696,345.70 = 521,439,747.24 : x
  2. Step 2: Convert to fraction form
    800,415,566.76/1,103,696,345.70 = 521,439,747.24/x
  3. Step 3: Cross multiply
    800,415,566.76x = 1,103,696,345.70 × 521,439,747.24
  4. Step 4: Simplify right side
    800,415,566.76x = 575,511,143,531,519,680
  5. Step 5: Solve for x
    x = 575,511,143,531,519,680/800,415,566.76
  6. Step 6: Final answer
    x = 719,015,430.77

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Double scale
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1.5x scale

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.