Home / 679,936,986.40-1,019,905,479.60-543,888,090.40

Finding the Fourth Proportional to 679,936,986.40, 1,019,905,479.60 and 543,888,090.40

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Solution

The fourth proportional to 679,936,986.40, 1,019,905,479.60 and 543,888,090.40 is: 815,832,135.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,936,986.40 : 1,019,905,479.60 = 543,888,090.40 : x
  2. Step 2: Convert to fraction form
    679,936,986.40/1,019,905,479.60 = 543,888,090.40/x
  3. Step 3: Cross multiply
    679,936,986.40x = 1,019,905,479.60 × 543,888,090.40
  4. Step 4: Simplify right side
    679,936,986.40x = 554,714,443,688,140,160
  5. Step 5: Solve for x
    x = 554,714,443,688,140,160/679,936,986.40
  6. Step 6: Final answer
    x = 815,832,135.60

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1.5x scale

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.