Home / 715,547.42-987,466.98-409,622.58

Finding the Fourth Proportional to 715,547.42, 987,466.98 and 409,622.58

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Solution

The fourth proportional to 715,547.42, 987,466.98 and 409,622.58 is: 565,285.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,547.42 : 987,466.98 = 409,622.58 : x
  2. Step 2: Convert to fraction form
    715,547.42/987,466.98 = 409,622.58/x
  3. Step 3: Cross multiply
    715,547.42x = 987,466.98 × 409,622.58
  4. Step 4: Simplify right side
    715,547.42x = 404,488,772,012.41
  5. Step 5: Solve for x
    x = 404,488,772,012.41/715,547.42
  6. Step 6: Final answer
    x = 565,285.77

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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.