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Finding the Fourth Proportional to 818,928,045.60, 1,228,392,068.40 and 818,928,045.60

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Solution

The fourth proportional to 818,928,045.60, 1,228,392,068.40 and 818,928,045.60 is: 1,228,392,068.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,928,045.60 : 1,228,392,068.40 = 818,928,045.60 : x
  2. Step 2: Convert to fraction form
    818,928,045.60/1,228,392,068.40 = 818,928,045.60/x
  3. Step 3: Cross multiply
    818,928,045.60x = 1,228,392,068.40 × 818,928,045.60
  4. Step 4: Simplify right side
    818,928,045.60x = 1,005,964,715,805,353,600
  5. Step 5: Solve for x
    x = 1,005,964,715,805,353,600/818,928,045.60
  6. Step 6: Final answer
    x = 1,228,392,068.40

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Double scale
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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.