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Finding the Fourth Proportional to 502,321.30, 692,802.48 and 330,415.78

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Solution

The fourth proportional to 502,321.30, 692,802.48 and 330,415.78 is: 455,710.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,321.30 : 692,802.48 = 330,415.78 : x
  2. Step 2: Convert to fraction form
    502,321.30/692,802.48 = 330,415.78/x
  3. Step 3: Cross multiply
    502,321.30x = 692,802.48 × 330,415.78
  4. Step 4: Simplify right side
    502,321.30x = 228,912,871,815.13
  5. Step 5: Solve for x
    x = 228,912,871,815.13/502,321.30
  6. Step 6: Final answer
    x = 455,710.06

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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.