Home / 830,413,617.20-1,245,620,425.80-485,189,543.60

Finding the Fourth Proportional to 830,413,617.20, 1,245,620,425.80 and 485,189,543.60

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Solution

The fourth proportional to 830,413,617.20, 1,245,620,425.80 and 485,189,543.60 is: 727,784,315.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,413,617.20 : 1,245,620,425.80 = 485,189,543.60 : x
  2. Step 2: Convert to fraction form
    830,413,617.20/1,245,620,425.80 = 485,189,543.60/x
  3. Step 3: Cross multiply
    830,413,617.20x = 1,245,620,425.80 × 485,189,543.60
  4. Step 4: Simplify right side
    830,413,617.20x = 604,362,005,892,739,712
  5. Step 5: Solve for x
    x = 604,362,005,892,739,712/830,413,617.20
  6. Step 6: Final answer
    x = 727,784,315.40

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1.5x scale

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.