Home / 727,680,655.80-1,091,520,983.70-210,127,980.60

Finding the Fourth Proportional to 727,680,655.80, 1,091,520,983.70 and 210,127,980.60

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Solution

The fourth proportional to 727,680,655.80, 1,091,520,983.70 and 210,127,980.60 is: 315,191,970.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,680,655.80 : 1,091,520,983.70 = 210,127,980.60 : x
  2. Step 2: Convert to fraction form
    727,680,655.80/1,091,520,983.70 = 210,127,980.60/x
  3. Step 3: Cross multiply
    727,680,655.80x = 1,091,520,983.70 × 210,127,980.60
  4. Step 4: Simplify right side
    727,680,655.80x = 229,359,100,087,406,528
  5. Step 5: Solve for x
    x = 229,359,100,087,406,528/727,680,655.80
  6. Step 6: Final answer
    x = 315,191,970.90

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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.