Home / 679,920,115.20-1,019,880,172.80-435,032,102.40

Finding the Fourth Proportional to 679,920,115.20, 1,019,880,172.80 and 435,032,102.40

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Solution

The fourth proportional to 679,920,115.20, 1,019,880,172.80 and 435,032,102.40 is: 652,548,153.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,920,115.20 : 1,019,880,172.80 = 435,032,102.40 : x
  2. Step 2: Convert to fraction form
    679,920,115.20/1,019,880,172.80 = 435,032,102.40/x
  3. Step 3: Cross multiply
    679,920,115.20x = 1,019,880,172.80 × 435,032,102.40
  4. Step 4: Simplify right side
    679,920,115.20x = 443,680,615,769,259,264
  5. Step 5: Solve for x
    x = 443,680,615,769,259,264/679,920,115.20
  6. Step 6: Final answer
    x = 652,548,153.60

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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.