Home / 719,199,436.96-992,496,948.24-389,178,117.28

Finding the Fourth Proportional to 719,199,436.96, 992,496,948.24 and 389,178,117.28

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Solution

The fourth proportional to 719,199,436.96, 992,496,948.24 and 389,178,117.28 is: 537,066,735.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,199,436.96 : 992,496,948.24 = 389,178,117.28 : x
  2. Step 2: Convert to fraction form
    719,199,436.96/992,496,948.24 = 389,178,117.28/x
  3. Step 3: Cross multiply
    719,199,436.96x = 992,496,948.24 × 389,178,117.28
  4. Step 4: Simplify right side
    719,199,436.96x = 386,258,093,722,188,800
  5. Step 5: Solve for x
    x = 386,258,093,722,188,800/719,199,436.96
  6. Step 6: Final answer
    x = 537,066,735.42

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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.