Home / 830,540,168.60-1,246,288,549.80-313,341,787.40

Finding the Fourth Proportional to 830,540,168.60, 1,246,288,549.80 and 313,341,787.40

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Solution

The fourth proportional to 830,540,168.60, 1,246,288,549.80 and 313,341,787.40 is: 470,193,130.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,540,168.60 : 1,246,288,549.80 = 313,341,787.40 : x
  2. Step 2: Convert to fraction form
    830,540,168.60/1,246,288,549.80 = 313,341,787.40/x
  3. Step 3: Cross multiply
    830,540,168.60x = 1,246,288,549.80 × 313,341,787.40
  4. Step 4: Simplify right side
    830,540,168.60x = 390,514,281,810,485,888
  5. Step 5: Solve for x
    x = 390,514,281,810,485,888/830,540,168.60
  6. Step 6: Final answer
    x = 470,193,130.42

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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.