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Finding the Fourth Proportional to 711,946.88, 982,446.72 and 389,656.32

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Solution

The fourth proportional to 711,946.88, 982,446.72 and 389,656.32 is: 537,703.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,946.88 : 982,446.72 = 389,656.32 : x
  2. Step 2: Convert to fraction form
    711,946.88/982,446.72 = 389,656.32/x
  3. Step 3: Cross multiply
    711,946.88x = 982,446.72 × 389,656.32
  4. Step 4: Simplify right side
    711,946.88x = 382,816,573,511.27
  5. Step 5: Solve for x
    x = 382,816,573,511.27/711,946.88
  6. Step 6: Final answer
    x = 537,703.84

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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.