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Finding the Fourth Proportional to 710,363.70, 980,316.36 and 388,094.64

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Solution

The fourth proportional to 710,363.70, 980,316.36 and 388,094.64 is: 535,578.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,363.70 : 980,316.36 = 388,094.64 : x
  2. Step 2: Convert to fraction form
    710,363.70/980,316.36 = 388,094.64/x
  3. Step 3: Cross multiply
    710,363.70x = 980,316.36 × 388,094.64
  4. Step 4: Simplify right side
    710,363.70x = 380,455,524,820.31
  5. Step 5: Solve for x
    x = 380,455,524,820.31/710,363.70
  6. Step 6: Final answer
    x = 535,578.50

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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.