Home / 630,497,570.78-870,140,429.80-352,092,879.02

Finding the Fourth Proportional to 630,497,570.78, 870,140,429.80 and 352,092,879.02

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Solution

The fourth proportional to 630,497,570.78, 870,140,429.80 and 352,092,879.02 is: 485,918,206.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,497,570.78 : 870,140,429.80 = 352,092,879.02 : x
  2. Step 2: Convert to fraction form
    630,497,570.78/870,140,429.80 = 352,092,879.02/x
  3. Step 3: Cross multiply
    630,497,570.78x = 870,140,429.80 × 352,092,879.02
  4. Step 4: Simplify right side
    630,497,570.78x = 306,370,249,079,982,144
  5. Step 5: Solve for x
    x = 306,370,249,079,982,144/630,497,570.78
  6. Step 6: Final answer
    x = 485,918,206.95

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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.