Home / 1,129,455,761.52-1,558,686,798.48-627,685,690.20

Finding the Fourth Proportional to 1,129,455,761.52, 1,558,686,798.48 and 627,685,690.20

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Solution

The fourth proportional to 1,129,455,761.52, 1,558,686,798.48 and 627,685,690.20 is: 866,227,285.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,455,761.52 : 1,558,686,798.48 = 627,685,690.20 : x
  2. Step 2: Convert to fraction form
    1,129,455,761.52/1,558,686,798.48 = 627,685,690.20/x
  3. Step 3: Cross multiply
    1,129,455,761.52x = 1,558,686,798.48 × 627,685,690.20
  4. Step 4: Simplify right side
    1,129,455,761.52x = 978,365,398,909,547,136
  5. Step 5: Solve for x
    x = 978,365,398,909,547,136/1,129,455,761.52
  6. Step 6: Final answer
    x = 866,227,285.96

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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.