Home / 719,199,434.46-992,496,944.79-389,178,114.78

Finding the Fourth Proportional to 719,199,434.46, 992,496,944.79 and 389,178,114.78

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Solution

The fourth proportional to 719,199,434.46, 992,496,944.79 and 389,178,114.78 is: 537,066,731.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,199,434.46 : 992,496,944.79 = 389,178,114.78 : x
  2. Step 2: Convert to fraction form
    719,199,434.46/992,496,944.79 = 389,178,114.78/x
  3. Step 3: Cross multiply
    719,199,434.46x = 992,496,944.79 × 389,178,114.78
  4. Step 4: Simplify right side
    719,199,434.46x = 386,258,089,898,281,920
  5. Step 5: Solve for x
    x = 386,258,089,898,281,920/719,199,434.46
  6. Step 6: Final answer
    x = 537,066,731.97

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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.