Home / 687,685,677.80-1,031,528,516.70-647,341,716.20

Finding the Fourth Proportional to 687,685,677.80, 1,031,528,516.70 and 647,341,716.20

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Solution

The fourth proportional to 687,685,677.80, 1,031,528,516.70 and 647,341,716.20 is: 971,012,574.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,685,677.80 : 1,031,528,516.70 = 647,341,716.20 : x
  2. Step 2: Convert to fraction form
    687,685,677.80/1,031,528,516.70 = 647,341,716.20/x
  3. Step 3: Cross multiply
    687,685,677.80x = 1,031,528,516.70 × 647,341,716.20
  4. Step 4: Simplify right side
    687,685,677.80x = 667,751,440,309,818,496
  5. Step 5: Solve for x
    x = 667,751,440,309,818,496/687,685,677.80
  6. Step 6: Final answer
    x = 971,012,574.30

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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.