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Finding the Fourth Proportional to 1,258,931,038.45, 1,888,396,557.68 and 1,258,931,038.45

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Solution

The fourth proportional to 1,258,931,038.45, 1,888,396,557.68 and 1,258,931,038.45 is: 1,888,396,557.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258,931,038.45 : 1,888,396,557.68 = 1,258,931,038.45 : x
  2. Step 2: Convert to fraction form
    1,258,931,038.45/1,888,396,557.68 = 1,258,931,038.45/x
  3. Step 3: Cross multiply
    1,258,931,038.45x = 1,888,396,557.68 × 1,258,931,038.45
  4. Step 4: Simplify right side
    1,258,931,038.45x = 2,377,361,039,365,488,128
  5. Step 5: Solve for x
    x = 2,377,361,039,365,488,128/1,258,931,038.45
  6. Step 6: Final answer
    x = 1,888,396,557.68

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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.