Home / 1,020,508,871.68-1,408,737,559.35-686,175,186.88

Finding the Fourth Proportional to 1,020,508,871.68, 1,408,737,559.35 and 686,175,186.88

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Solution

The fourth proportional to 1,020,508,871.68, 1,408,737,559.35 and 686,175,186.88 is: 947,214,458.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,508,871.68 : 1,408,737,559.35 = 686,175,186.88 : x
  2. Step 2: Convert to fraction form
    1,020,508,871.68/1,408,737,559.35 = 686,175,186.88/x
  3. Step 3: Cross multiply
    1,020,508,871.68x = 1,408,737,559.35 × 686,175,186.88
  4. Step 4: Simplify right side
    1,020,508,871.68x = 966,640,758,051,861,248
  5. Step 5: Solve for x
    x = 966,640,758,051,861,248/1,020,508,871.68
  6. Step 6: Final answer
    x = 947,214,458.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.