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Finding the Fourth Proportional to 978,804,911.10, 1,468,207,366.65 and 591,821,384.70

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Solution

The fourth proportional to 978,804,911.10, 1,468,207,366.65 and 591,821,384.70 is: 887,732,077.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,804,911.10 : 1,468,207,366.65 = 591,821,384.70 : x
  2. Step 2: Convert to fraction form
    978,804,911.10/1,468,207,366.65 = 591,821,384.70/x
  3. Step 3: Cross multiply
    978,804,911.10x = 1,468,207,366.65 × 591,821,384.70
  4. Step 4: Simplify right side
    978,804,911.10x = 868,916,516,757,543,680
  5. Step 5: Solve for x
    x = 868,916,516,757,543,680/978,804,911.10
  6. Step 6: Final answer
    x = 887,732,077.05

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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.