Home / 908,385,336.39-1,253,572,880.01-490,697,621.70

Finding the Fourth Proportional to 908,385,336.39, 1,253,572,880.01 and 490,697,621.70

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Solution

The fourth proportional to 908,385,336.39, 1,253,572,880.01 and 490,697,621.70 is: 677,163,320.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,385,336.39 : 1,253,572,880.01 = 490,697,621.70 : x
  2. Step 2: Convert to fraction form
    908,385,336.39/1,253,572,880.01 = 490,697,621.70/x
  3. Step 3: Cross multiply
    908,385,336.39x = 1,253,572,880.01 × 490,697,621.70
  4. Step 4: Simplify right side
    908,385,336.39x = 615,125,230,841,960,960
  5. Step 5: Solve for x
    x = 615,125,230,841,960,960/908,385,336.39
  6. Step 6: Final answer
    x = 677,163,320.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.