Home / 687,077,015.40-1,029,943,676.70-614,517,604.20

Finding the Fourth Proportional to 687,077,015.40, 1,029,943,676.70 and 614,517,604.20

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Solution

The fourth proportional to 687,077,015.40, 1,029,943,676.70 and 614,517,604.20 is: 921,175,510.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,077,015.40 : 1,029,943,676.70 = 614,517,604.20 : x
  2. Step 2: Convert to fraction form
    687,077,015.40/1,029,943,676.70 = 614,517,604.20/x
  3. Step 3: Cross multiply
    687,077,015.40x = 1,029,943,676.70 × 614,517,604.20
  4. Step 4: Simplify right side
    687,077,015.40x = 632,918,520,666,623,488
  5. Step 5: Solve for x
    x = 632,918,520,666,623,488/687,077,015.40
  6. Step 6: Final answer
    x = 921,175,510.87

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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.