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Finding the Fourth Proportional to 680,714.16, 939,675.96 and 484,607.04

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Solution

The fourth proportional to 680,714.16, 939,675.96 and 484,607.04 is: 668,964.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,714.16 : 939,675.96 = 484,607.04 : x
  2. Step 2: Convert to fraction form
    680,714.16/939,675.96 = 484,607.04/x
  3. Step 3: Cross multiply
    680,714.16x = 939,675.96 × 484,607.04
  4. Step 4: Simplify right side
    680,714.16x = 455,373,585,534.76
  5. Step 5: Solve for x
    x = 455,373,585,534.76/680,714.16
  6. Step 6: Final answer
    x = 668,964.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.