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Finding the Fourth Proportional to 559,638.49, 772,425.77 and 355,649.64

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Solution

The fourth proportional to 559,638.49, 772,425.77 and 355,649.64 is: 490,875.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,638.49 : 772,425.77 = 355,649.64 : x
  2. Step 2: Convert to fraction form
    559,638.49/772,425.77 = 355,649.64/x
  3. Step 3: Cross multiply
    559,638.49x = 772,425.77 × 355,649.64
  4. Step 4: Simplify right side
    559,638.49x = 274,712,944,352.91
  5. Step 5: Solve for x
    x = 274,712,944,352.91/559,638.49
  6. Step 6: Final answer
    x = 490,875.71

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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.