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Finding the Fourth Proportional to 710,732.70, 980,796.53 and 388,445.09

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Solution

The fourth proportional to 710,732.70, 980,796.53 and 388,445.09 is: 536,046.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,732.70 : 980,796.53 = 388,445.09 : x
  2. Step 2: Convert to fraction form
    710,732.70/980,796.53 = 388,445.09/x
  3. Step 3: Cross multiply
    710,732.70x = 980,796.53 × 388,445.09
  4. Step 4: Simplify right side
    710,732.70x = 380,985,592,434.67
  5. Step 5: Solve for x
    x = 380,985,592,434.67/710,732.70
  6. Step 6: Final answer
    x = 536,046.24

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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.