Home / 689,559,232.80-1,034,338,849.20-431,066,330.40

Finding the Fourth Proportional to 689,559,232.80, 1,034,338,849.20 and 431,066,330.40

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Solution

The fourth proportional to 689,559,232.80, 1,034,338,849.20 and 431,066,330.40 is: 646,599,495.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,559,232.80 : 1,034,338,849.20 = 431,066,330.40 : x
  2. Step 2: Convert to fraction form
    689,559,232.80/1,034,338,849.20 = 431,066,330.40/x
  3. Step 3: Cross multiply
    689,559,232.80x = 1,034,338,849.20 × 431,066,330.40
  4. Step 4: Simplify right side
    689,559,232.80x = 445,868,652,114,802,944
  5. Step 5: Solve for x
    x = 445,868,652,114,802,944/689,559,232.80
  6. Step 6: Final answer
    x = 646,599,495.60

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1.5x scale

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.