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Finding the Fourth Proportional to 874,608.67, 1,206,547.35 and 511,807.90

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Solution

The fourth proportional to 874,608.67, 1,206,547.35 and 511,807.90 is: 706,053.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,608.67 : 1,206,547.35 = 511,807.90 : x
  2. Step 2: Convert to fraction form
    874,608.67/1,206,547.35 = 511,807.90/x
  3. Step 3: Cross multiply
    874,608.67x = 1,206,547.35 × 511,807.90
  4. Step 4: Simplify right side
    874,608.67x = 617,520,465,454.07
  5. Step 5: Solve for x
    x = 617,520,465,454.07/874,608.67
  6. Step 6: Final answer
    x = 706,053.45

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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.