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Finding the Fourth Proportional to 710,200.10, 980,071.14 and 387,910.28

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Solution

The fourth proportional to 710,200.10, 980,071.14 and 387,910.28 is: 535,313.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,200.10 : 980,071.14 = 387,910.28 : x
  2. Step 2: Convert to fraction form
    710,200.10/980,071.14 = 387,910.28/x
  3. Step 3: Cross multiply
    710,200.10x = 980,071.14 × 387,910.28
  4. Step 4: Simplify right side
    710,200.10x = 380,179,670,337.32
  5. Step 5: Solve for x
    x = 380,179,670,337.32/710,200.10
  6. Step 6: Final answer
    x = 535,313.46

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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.