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Finding the Fourth Proportional to 710,350.40, 980,267.52 and 388,062.08

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Solution

The fourth proportional to 710,350.40, 980,267.52 and 388,062.08 is: 535,516.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,350.40 : 980,267.52 = 388,062.08 : x
  2. Step 2: Convert to fraction form
    710,350.40/980,267.52 = 388,062.08/x
  3. Step 3: Cross multiply
    710,350.40x = 980,267.52 × 388,062.08
  4. Step 4: Simplify right side
    710,350.40x = 380,404,652,767.64
  5. Step 5: Solve for x
    x = 380,404,652,767.64/710,350.40
  6. Step 6: Final answer
    x = 535,516.91

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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.