Home / 1,218,532,490.79-1,827,709,335.72-389,263,474.55

Finding the Fourth Proportional to 1,218,532,490.79, 1,827,709,335.72 and 389,263,474.55

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Solution

The fourth proportional to 1,218,532,490.79, 1,827,709,335.72 and 389,263,474.55 is: 583,866,652.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,532,490.79 : 1,827,709,335.72 = 389,263,474.55 : x
  2. Step 2: Convert to fraction form
    1,218,532,490.79/1,827,709,335.72 = 389,263,474.55/x
  3. Step 3: Cross multiply
    1,218,532,490.79x = 1,827,709,335.72 × 389,263,474.55
  4. Step 4: Simplify right side
    1,218,532,490.79x = 711,460,486,480,701,184
  5. Step 5: Solve for x
    x = 711,460,486,480,701,184/1,218,532,490.79
  6. Step 6: Final answer
    x = 583,866,652.60

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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.