Home / 689,919,328.40-1,035,382,877.40-485,845,984.40

Finding the Fourth Proportional to 689,919,328.40, 1,035,382,877.40 and 485,845,984.40

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Solution

The fourth proportional to 689,919,328.40, 1,035,382,877.40 and 485,845,984.40 is: 729,123,815.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,919,328.40 : 1,035,382,877.40 = 485,845,984.40 : x
  2. Step 2: Convert to fraction form
    689,919,328.40/1,035,382,877.40 = 485,845,984.40/x
  3. Step 3: Cross multiply
    689,919,328.40x = 1,035,382,877.40 × 485,845,984.40
  4. Step 4: Simplify right side
    689,919,328.40x = 503,036,613,301,307,456
  5. Step 5: Solve for x
    x = 503,036,613,301,307,456/689,919,328.40
  6. Step 6: Final answer
    x = 729,123,815.78

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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.