Home / 645,066.56-968,111.76-345,768.32

Finding the Fourth Proportional to 645,066.56, 968,111.76 and 345,768.32

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Solution

The fourth proportional to 645,066.56, 968,111.76 and 345,768.32 is: 518,926.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,066.56 : 968,111.76 = 345,768.32 : x
  2. Step 2: Convert to fraction form
    645,066.56/968,111.76 = 345,768.32/x
  3. Step 3: Cross multiply
    645,066.56x = 968,111.76 × 345,768.32
  4. Step 4: Simplify right side
    645,066.56x = 334,742,376,827.44
  5. Step 5: Solve for x
    x = 334,742,376,827.44/645,066.56
  6. Step 6: Final answer
    x = 518,926.88

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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.