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Finding the Fourth Proportional to 512,145.04, 706,760.28 and 282,702.45

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Solution

The fourth proportional to 512,145.04, 706,760.28 and 282,702.45 is: 390,129.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,145.04 : 706,760.28 = 282,702.45 : x
  2. Step 2: Convert to fraction form
    512,145.04/706,760.28 = 282,702.45/x
  3. Step 3: Cross multiply
    512,145.04x = 706,760.28 × 282,702.45
  4. Step 4: Simplify right side
    512,145.04x = 199,802,862,718.69
  5. Step 5: Solve for x
    x = 199,802,862,718.69/512,145.04
  6. Step 6: Final answer
    x = 390,129.45

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1.5x scale

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.