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Finding the Fourth Proportional to 1,358,947,767.62, 1,875,318,525.60 and 786,754,949.76

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Solution

The fourth proportional to 1,358,947,767.62, 1,875,318,525.60 and 786,754,949.76 is: 1,085,704,813.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358,947,767.62 : 1,875,318,525.60 = 786,754,949.76 : x
  2. Step 2: Convert to fraction form
    1,358,947,767.62/1,875,318,525.60 = 786,754,949.76/x
  3. Step 3: Cross multiply
    1,358,947,767.62x = 1,875,318,525.60 × 786,754,949.76
  4. Step 4: Simplify right side
    1,358,947,767.62x = 1,475,416,132,392,425,216
  5. Step 5: Solve for x
    x = 1,475,416,132,392,425,216/1,358,947,767.62
  6. Step 6: Final answer
    x = 1,085,704,813.35

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1.5x scale

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.