Home / 851,810,985-1,175,510,580.72-480,531,868.20

Finding the Fourth Proportional to 851,810,985, 1,175,510,580.72 and 480,531,868.20

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Solution

The fourth proportional to 851,810,985, 1,175,510,580.72 and 480,531,868.20 is: 663,140,421.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,810,985 : 1,175,510,580.72 = 480,531,868.20 : x
  2. Step 2: Convert to fraction form
    851,810,985/1,175,510,580.72 = 480,531,868.20/x
  3. Step 3: Cross multiply
    851,810,985x = 1,175,510,580.72 × 480,531,868.20
  4. Step 4: Simplify right side
    851,810,985x = 564,870,295,442,248,512
  5. Step 5: Solve for x
    x = 564,870,295,442,248,512/851,810,985
  6. Step 6: Final answer
    x = 663,140,421.28

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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.