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Finding the Fourth Proportional to 570,293,081.76, 787,005,035.28 and 309,532,751.52

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Solution

The fourth proportional to 570,293,081.76, 787,005,035.28 and 309,532,751.52 is: 427,155,513.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,293,081.76 : 787,005,035.28 = 309,532,751.52 : x
  2. Step 2: Convert to fraction form
    570,293,081.76/787,005,035.28 = 309,532,751.52/x
  3. Step 3: Cross multiply
    570,293,081.76x = 787,005,035.28 × 309,532,751.52
  4. Step 4: Simplify right side
    570,293,081.76x = 243,603,834,030,313,056
  5. Step 5: Solve for x
    x = 243,603,834,030,313,056/570,293,081.76
  6. Step 6: Final answer
    x = 427,155,513.23

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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.