Home / 679,954,006.40-1,019,931,009.60-543,905,110.40

Finding the Fourth Proportional to 679,954,006.40, 1,019,931,009.60 and 543,905,110.40

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Solution

The fourth proportional to 679,954,006.40, 1,019,931,009.60 and 543,905,110.40 is: 815,857,665.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,954,006.40 : 1,019,931,009.60 = 543,905,110.40 : x
  2. Step 2: Convert to fraction form
    679,954,006.40/1,019,931,009.60 = 543,905,110.40/x
  3. Step 3: Cross multiply
    679,954,006.40x = 1,019,931,009.60 × 543,905,110.40
  4. Step 4: Simplify right side
    679,954,006.40x = 554,745,688,376,871,424
  5. Step 5: Solve for x
    x = 554,745,688,376,871,424/679,954,006.40
  6. Step 6: Final answer
    x = 815,857,665.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.