Home / 485,276,543.40-727,914,815.10-213,178,751.40

Finding the Fourth Proportional to 485,276,543.40, 727,914,815.10 and 213,178,751.40

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Solution

The fourth proportional to 485,276,543.40, 727,914,815.10 and 213,178,751.40 is: 319,768,127.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,276,543.40 : 727,914,815.10 = 213,178,751.40 : x
  2. Step 2: Convert to fraction form
    485,276,543.40/727,914,815.10 = 213,178,751.40/x
  3. Step 3: Cross multiply
    485,276,543.40x = 727,914,815.10 × 213,178,751.40
  4. Step 4: Simplify right side
    485,276,543.40x = 155,175,971,408,579,872
  5. Step 5: Solve for x
    x = 155,175,971,408,579,872/485,276,543.40
  6. Step 6: Final answer
    x = 319,768,127.10

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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.