Home / 438,051,520.40-657,077,280.60-265,722,918.80

Finding the Fourth Proportional to 438,051,520.40, 657,077,280.60 and 265,722,918.80

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Solution

The fourth proportional to 438,051,520.40, 657,077,280.60 and 265,722,918.80 is: 398,584,378.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,051,520.40 : 657,077,280.60 = 265,722,918.80 : x
  2. Step 2: Convert to fraction form
    438,051,520.40/657,077,280.60 = 265,722,918.80/x
  3. Step 3: Cross multiply
    438,051,520.40x = 657,077,280.60 × 265,722,918.80
  4. Step 4: Simplify right side
    438,051,520.40x = 174,600,492,878,198,624
  5. Step 5: Solve for x
    x = 174,600,492,878,198,624/438,051,520.40
  6. Step 6: Final answer
    x = 398,584,378.20

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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.