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Finding the Fourth Proportional to 708,602.52, 977,878.86 and 386,310.84

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Solution

The fourth proportional to 708,602.52, 977,878.86 and 386,310.84 is: 533,112.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,602.52 : 977,878.86 = 386,310.84 : x
  2. Step 2: Convert to fraction form
    708,602.52/977,878.86 = 386,310.84/x
  3. Step 3: Cross multiply
    708,602.52x = 977,878.86 × 386,310.84
  4. Step 4: Simplify right side
    708,602.52x = 377,765,203,824.84
  5. Step 5: Solve for x
    x = 377,765,203,824.84/708,602.52
  6. Step 6: Final answer
    x = 533,112.98

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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.