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Finding the Fourth Proportional to 873,505,689.40, 1,310,258,534.10 and 806,992,895.80

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Solution

The fourth proportional to 873,505,689.40, 1,310,258,534.10 and 806,992,895.80 is: 1,210,489,343.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,505,689.40 : 1,310,258,534.10 = 806,992,895.80 : x
  2. Step 2: Convert to fraction form
    873,505,689.40/1,310,258,534.10 = 806,992,895.80/x
  3. Step 3: Cross multiply
    873,505,689.40x = 1,310,258,534.10 × 806,992,895.80
  4. Step 4: Simplify right side
    873,505,689.40x = 1,057,369,328,680,021,888
  5. Step 5: Solve for x
    x = 1,057,369,328,680,021,888/873,505,689.40
  6. Step 6: Final answer
    x = 1,210,489,343.70

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1.5x scale

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.