Home / 689,490,903.80-1,034,236,355.70-431,501,886.20

Finding the Fourth Proportional to 689,490,903.80, 1,034,236,355.70 and 431,501,886.20

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Solution

The fourth proportional to 689,490,903.80, 1,034,236,355.70 and 431,501,886.20 is: 647,252,829.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,490,903.80 : 1,034,236,355.70 = 431,501,886.20 : x
  2. Step 2: Convert to fraction form
    689,490,903.80/1,034,236,355.70 = 431,501,886.20/x
  3. Step 3: Cross multiply
    689,490,903.80x = 1,034,236,355.70 × 431,501,886.20
  4. Step 4: Simplify right side
    689,490,903.80x = 446,274,938,261,164,160
  5. Step 5: Solve for x
    x = 446,274,938,261,164,160/689,490,903.80
  6. Step 6: Final answer
    x = 647,252,829.30

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Double scale
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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.