Home / 759,720.21-1,139,159.60-310,756.35

Finding the Fourth Proportional to 759,720.21, 1,139,159.60 and 310,756.35

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Solution

The fourth proportional to 759,720.21, 1,139,159.60 and 310,756.35 is: 465,962.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    759,720.21 : 1,139,159.60 = 310,756.35 : x
  2. Step 2: Convert to fraction form
    759,720.21/1,139,159.60 = 310,756.35/x
  3. Step 3: Cross multiply
    759,720.21x = 1,139,159.60 × 310,756.35
  4. Step 4: Simplify right side
    759,720.21x = 354,001,076,839.09
  5. Step 5: Solve for x
    x = 354,001,076,839.09/759,720.21
  6. Step 6: Final answer
    x = 465,962.43

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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.