Home / 670,009,205.70-1,005,013,808.55-515,041,010.10

Finding the Fourth Proportional to 670,009,205.70, 1,005,013,808.55 and 515,041,010.10

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Solution

The fourth proportional to 670,009,205.70, 1,005,013,808.55 and 515,041,010.10 is: 772,561,515.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,009,205.70 : 1,005,013,808.55 = 515,041,010.10 : x
  2. Step 2: Convert to fraction form
    670,009,205.70/1,005,013,808.55 = 515,041,010.10/x
  3. Step 3: Cross multiply
    670,009,205.70x = 1,005,013,808.55 × 515,041,010.10
  4. Step 4: Simplify right side
    670,009,205.70x = 517,623,327,120,040,000
  5. Step 5: Solve for x
    x = 517,623,327,120,040,000/670,009,205.70
  6. Step 6: Final answer
    x = 772,561,515.15

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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.