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Finding the Fourth Proportional to 655,057.64, 903,986.76 and 360,740.40

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Solution

The fourth proportional to 655,057.64, 903,986.76 and 360,740.40 is: 497,825.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,057.64 : 903,986.76 = 360,740.40 : x
  2. Step 2: Convert to fraction form
    655,057.64/903,986.76 = 360,740.40/x
  3. Step 3: Cross multiply
    655,057.64x = 903,986.76 × 360,740.40
  4. Step 4: Simplify right side
    655,057.64x = 326,104,545,397.10
  5. Step 5: Solve for x
    x = 326,104,545,397.10/655,057.64
  6. Step 6: Final answer
    x = 497,825.73

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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.