Home / 715,547.36-987,434.48-409,613.60

Finding the Fourth Proportional to 715,547.36, 987,434.48 and 409,613.60

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Solution

The fourth proportional to 715,547.36, 987,434.48 and 409,613.60 is: 565,254.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,547.36 : 987,434.48 = 409,613.60 : x
  2. Step 2: Convert to fraction form
    715,547.36/987,434.48 = 409,613.60/x
  3. Step 3: Cross multiply
    715,547.36x = 987,434.48 × 409,613.60
  4. Step 4: Simplify right side
    715,547.36x = 404,466,592,116.93
  5. Step 5: Solve for x
    x = 404,466,592,116.93/715,547.36
  6. Step 6: Final answer
    x = 565,254.82

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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.