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Finding the Fourth Proportional to 559,799.71, 772,086.63 and 387,782.59

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Solution

The fourth proportional to 559,799.71, 772,086.63 and 387,782.59 is: 534,837.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,799.71 : 772,086.63 = 387,782.59 : x
  2. Step 2: Convert to fraction form
    559,799.71/772,086.63 = 387,782.59/x
  3. Step 3: Cross multiply
    559,799.71x = 772,086.63 × 387,782.59
  4. Step 4: Simplify right side
    559,799.71x = 299,401,754,057.40
  5. Step 5: Solve for x
    x = 299,401,754,057.40/559,799.71
  6. Step 6: Final answer
    x = 534,837.28

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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.