Home / 990,121,042.56-1,366,286,932.80-572,460,124.80

Finding the Fourth Proportional to 990,121,042.56, 1,366,286,932.80 and 572,460,124.80

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Solution

The fourth proportional to 990,121,042.56, 1,366,286,932.80 and 572,460,124.80 is: 789,948,657.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,121,042.56 : 1,366,286,932.80 = 572,460,124.80 : x
  2. Step 2: Convert to fraction form
    990,121,042.56/1,366,286,932.80 = 572,460,124.80/x
  3. Step 3: Cross multiply
    990,121,042.56x = 1,366,286,932.80 × 572,460,124.80
  4. Step 4: Simplify right side
    990,121,042.56x = 782,144,788,063,297,152
  5. Step 5: Solve for x
    x = 782,144,788,063,297,152/990,121,042.56
  6. Step 6: Final answer
    x = 789,948,657.23

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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.