Home / 489,646,890.40-734,470,335.60-162,172,946.20

Finding the Fourth Proportional to 489,646,890.40, 734,470,335.60 and 162,172,946.20

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Solution

The fourth proportional to 489,646,890.40, 734,470,335.60 and 162,172,946.20 is: 243,259,419.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,646,890.40 : 734,470,335.60 = 162,172,946.20 : x
  2. Step 2: Convert to fraction form
    489,646,890.40/734,470,335.60 = 162,172,946.20/x
  3. Step 3: Cross multiply
    489,646,890.40x = 734,470,335.60 × 162,172,946.20
  4. Step 4: Simplify right side
    489,646,890.40x = 119,111,218,220,754,736
  5. Step 5: Solve for x
    x = 119,111,218,220,754,736/489,646,890.40
  6. Step 6: Final answer
    x = 243,259,419.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.