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Finding the Fourth Proportional to 710,579.31, 980,602.01 and 388,289.42

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Solution

The fourth proportional to 710,579.31, 980,602.01 and 388,289.42 is: 535,840.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,579.31 : 980,602.01 = 388,289.42 : x
  2. Step 2: Convert to fraction form
    710,579.31/980,602.01 = 388,289.42/x
  3. Step 3: Cross multiply
    710,579.31x = 980,602.01 × 388,289.42
  4. Step 4: Simplify right side
    710,579.31x = 380,757,378,869.28
  5. Step 5: Solve for x
    x = 380,757,378,869.28/710,579.31
  6. Step 6: Final answer
    x = 535,840.79

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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.