Home / 1,129,455,885.16-1,558,686,968.20-627,685,815.74

Finding the Fourth Proportional to 1,129,455,885.16, 1,558,686,968.20 and 627,685,815.74

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Solution

The fourth proportional to 1,129,455,885.16, 1,558,686,968.20 and 627,685,815.74 is: 866,227,458.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,455,885.16 : 1,558,686,968.20 = 627,685,815.74 : x
  2. Step 2: Convert to fraction form
    1,129,455,885.16/1,558,686,968.20 = 627,685,815.74/x
  3. Step 3: Cross multiply
    1,129,455,885.16x = 1,558,686,968.20 × 627,685,815.74
  4. Step 4: Simplify right side
    1,129,455,885.16x = 978,365,701,117,924,480
  5. Step 5: Solve for x
    x = 978,365,701,117,924,480/1,129,455,885.16
  6. Step 6: Final answer
    x = 866,227,458.70

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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.