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Finding the Fourth Proportional to 511,809.30, 715,599.90 and 511,809.30

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Solution

The fourth proportional to 511,809.30, 715,599.90 and 511,809.30 is: 715,599.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,809.30 : 715,599.90 = 511,809.30 : x
  2. Step 2: Convert to fraction form
    511,809.30/715,599.90 = 511,809.30/x
  3. Step 3: Cross multiply
    511,809.30x = 715,599.90 × 511,809.30
  4. Step 4: Simplify right side
    511,809.30x = 366,250,683,899.07
  5. Step 5: Solve for x
    x = 366,250,683,899.07/511,809.30
  6. Step 6: Final answer
    x = 715,599.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.