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Finding the Fourth Proportional to 710,602.08, 980,643.70 and 388,325.76

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Solution

The fourth proportional to 710,602.08, 980,643.70 and 388,325.76 is: 535,896.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,602.08 : 980,643.70 = 388,325.76 : x
  2. Step 2: Convert to fraction form
    710,602.08/980,643.70 = 388,325.76/x
  3. Step 3: Cross multiply
    710,602.08x = 980,643.70 × 388,325.76
  4. Step 4: Simplify right side
    710,602.08x = 380,809,204,715.37
  5. Step 5: Solve for x
    x = 380,809,204,715.37/710,602.08
  6. Step 6: Final answer
    x = 535,896.56

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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.