Home / 719,296,654.70-992,629,371.45-389,271,793.70

Finding the Fourth Proportional to 719,296,654.70, 992,629,371.45 and 389,271,793.70

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Solution

The fourth proportional to 719,296,654.70, 992,629,371.45 and 389,271,793.70 is: 537,195,068.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,296,654.70 : 992,629,371.45 = 389,271,793.70 : x
  2. Step 2: Convert to fraction form
    719,296,654.70/992,629,371.45 = 389,271,793.70/x
  3. Step 3: Cross multiply
    719,296,654.70x = 992,629,371.45 × 389,271,793.70
  4. Step 4: Simplify right side
    719,296,654.70x = 386,402,615,898,681,920
  5. Step 5: Solve for x
    x = 386,402,615,898,681,920/719,296,654.70
  6. Step 6: Final answer
    x = 537,195,068.79

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Double scale
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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.