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Finding the Fourth Proportional to 645,893,307.64, 969,267,861.78 and 354,963,598.84

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Solution

The fourth proportional to 645,893,307.64, 969,267,861.78 and 354,963,598.84 is: 532,680,559.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,893,307.64 : 969,267,861.78 = 354,963,598.84 : x
  2. Step 2: Convert to fraction form
    645,893,307.64/969,267,861.78 = 354,963,598.84/x
  3. Step 3: Cross multiply
    645,893,307.64x = 969,267,861.78 × 354,963,598.84
  4. Step 4: Simplify right side
    645,893,307.64x = 344,054,808,457,380,480
  5. Step 5: Solve for x
    x = 344,054,808,457,380,480/645,893,307.64
  6. Step 6: Final answer
    x = 532,680,559.45

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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.