Home / 830,520,921.60-1,245,781,382.40-400,539,225.60

Finding the Fourth Proportional to 830,520,921.60, 1,245,781,382.40 and 400,539,225.60

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Solution

The fourth proportional to 830,520,921.60, 1,245,781,382.40 and 400,539,225.60 is: 600,808,838.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,520,921.60 : 1,245,781,382.40 = 400,539,225.60 : x
  2. Step 2: Convert to fraction form
    830,520,921.60/1,245,781,382.40 = 400,539,225.60/x
  3. Step 3: Cross multiply
    830,520,921.60x = 1,245,781,382.40 × 400,539,225.60
  4. Step 4: Simplify right side
    830,520,921.60x = 498,984,310,173,393,536
  5. Step 5: Solve for x
    x = 498,984,310,173,393,536/830,520,921.60
  6. Step 6: Final answer
    x = 600,808,838.40

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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.