Home / 727,668,643.20-1,091,502,964.80-210,151,397.40

Finding the Fourth Proportional to 727,668,643.20, 1,091,502,964.80 and 210,151,397.40

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Solution

The fourth proportional to 727,668,643.20, 1,091,502,964.80 and 210,151,397.40 is: 315,227,096.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,668,643.20 : 1,091,502,964.80 = 210,151,397.40 : x
  2. Step 2: Convert to fraction form
    727,668,643.20/1,091,502,964.80 = 210,151,397.40/x
  3. Step 3: Cross multiply
    727,668,643.20x = 1,091,502,964.80 × 210,151,397.40
  4. Step 4: Simplify right side
    727,668,643.20x = 229,380,873,318,963,008
  5. Step 5: Solve for x
    x = 229,380,873,318,963,008/727,668,643.20
  6. Step 6: Final answer
    x = 315,227,096.10

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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.