Home / 1,129,424,386.12-1,558,643,459-627,654,321.16

Finding the Fourth Proportional to 1,129,424,386.12, 1,558,643,459 and 627,654,321.16

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Solution

The fourth proportional to 1,129,424,386.12, 1,558,643,459 and 627,654,321.16 is: 866,183,973.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,424,386.12 : 1,558,643,459 = 627,654,321.16 : x
  2. Step 2: Convert to fraction form
    1,129,424,386.12/1,558,643,459 = 627,654,321.16/x
  3. Step 3: Cross multiply
    1,129,424,386.12x = 1,558,643,459 × 627,654,321.16
  4. Step 4: Simplify right side
    1,129,424,386.12x = 978,289,302,189,119,232
  5. Step 5: Solve for x
    x = 978,289,302,189,119,232/1,129,424,386.12
  6. Step 6: Final answer
    x = 866,183,973.19

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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.