Home / 1,209,990,494.20-1,813,908,962.92-472,892,775.16

Finding the Fourth Proportional to 1,209,990,494.20, 1,813,908,962.92 and 472,892,775.16

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Solution

The fourth proportional to 1,209,990,494.20, 1,813,908,962.92 and 472,892,775.16 is: 708,918,332.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,990,494.20 : 1,813,908,962.92 = 472,892,775.16 : x
  2. Step 2: Convert to fraction form
    1,209,990,494.20/1,813,908,962.92 = 472,892,775.16/x
  3. Step 3: Cross multiply
    1,209,990,494.20x = 1,813,908,962.92 × 472,892,775.16
  4. Step 4: Simplify right side
    1,209,990,494.20x = 857,784,443,362,836,480
  5. Step 5: Solve for x
    x = 857,784,443,362,836,480/1,209,990,494.20
  6. Step 6: Final answer
    x = 708,918,332.40

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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.