Home / 665,316.82-918,136.47-359,393.13

Finding the Fourth Proportional to 665,316.82, 918,136.47 and 359,393.13

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Solution

The fourth proportional to 665,316.82, 918,136.47 and 359,393.13 is: 495,962.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,316.82 : 918,136.47 = 359,393.13 : x
  2. Step 2: Convert to fraction form
    665,316.82/918,136.47 = 359,393.13/x
  3. Step 3: Cross multiply
    665,316.82x = 918,136.47 × 359,393.13
  4. Step 4: Simplify right side
    665,316.82x = 329,971,936,464.33
  5. Step 5: Solve for x
    x = 329,971,936,464.33/665,316.82
  6. Step 6: Final answer
    x = 495,962.11

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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.