Home / 719,199,432.96-992,496,942.72-389,178,113.28

Finding the Fourth Proportional to 719,199,432.96, 992,496,942.72 and 389,178,113.28

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Solution

The fourth proportional to 719,199,432.96, 992,496,942.72 and 389,178,113.28 is: 537,066,729.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,199,432.96 : 992,496,942.72 = 389,178,113.28 : x
  2. Step 2: Convert to fraction form
    719,199,432.96/992,496,942.72 = 389,178,113.28/x
  3. Step 3: Cross multiply
    719,199,432.96x = 992,496,942.72 × 389,178,113.28
  4. Step 4: Simplify right side
    719,199,432.96x = 386,258,087,603,937,792
  5. Step 5: Solve for x
    x = 386,258,087,603,937,792/719,199,432.96
  6. Step 6: Final answer
    x = 537,066,729.90

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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.