Home / 870,372,111.78-1,201,142,993.13-473,910,477.30

Finding the Fourth Proportional to 870,372,111.78, 1,201,142,993.13 and 473,910,477.30

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Solution

The fourth proportional to 870,372,111.78, 1,201,142,993.13 and 473,910,477.30 is: 654,012,509.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,372,111.78 : 1,201,142,993.13 = 473,910,477.30 : x
  2. Step 2: Convert to fraction form
    870,372,111.78/1,201,142,993.13 = 473,910,477.30/x
  3. Step 3: Cross multiply
    870,372,111.78x = 1,201,142,993.13 × 473,910,477.30
  4. Step 4: Simplify right side
    870,372,111.78x = 569,234,249,179,788,992
  5. Step 5: Solve for x
    x = 569,234,249,179,788,992/870,372,111.78
  6. Step 6: Final answer
    x = 654,012,509.68

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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.