Home / 430,733,966.80-646,195,428.60-212,488,862.80

Finding the Fourth Proportional to 430,733,966.80, 646,195,428.60 and 212,488,862.80

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Solution

The fourth proportional to 430,733,966.80, 646,195,428.60 and 212,488,862.80 is: 318,779,902.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,733,966.80 : 646,195,428.60 = 212,488,862.80 : x
  2. Step 2: Convert to fraction form
    430,733,966.80/646,195,428.60 = 212,488,862.80/x
  3. Step 3: Cross multiply
    430,733,966.80x = 646,195,428.60 × 212,488,862.80
  4. Step 4: Simplify right side
    430,733,966.80x = 137,309,331,769,772,608
  5. Step 5: Solve for x
    x = 137,309,331,769,772,608/430,733,966.80
  6. Step 6: Final answer
    x = 318,779,902.10

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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.