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Finding the Fourth Proportional to 637,547.66, 955,603.82 and 278,021.06

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Solution

The fourth proportional to 637,547.66, 955,603.82 and 278,021.06 is: 416,718.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,547.66 : 955,603.82 = 278,021.06 : x
  2. Step 2: Convert to fraction form
    637,547.66/955,603.82 = 278,021.06/x
  3. Step 3: Cross multiply
    637,547.66x = 955,603.82 × 278,021.06
  4. Step 4: Simplify right side
    637,547.66x = 265,677,986,976.45
  5. Step 5: Solve for x
    x = 265,677,986,976.45/637,547.66
  6. Step 6: Final answer
    x = 416,718.63

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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.