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Finding the Fourth Proportional to 570,740,841.32, 787,626,392.10 and 309,980,457.32

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Solution

The fourth proportional to 570,740,841.32, 787,626,392.10 and 309,980,457.32 is: 427,775,220.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,740,841.32 : 787,626,392.10 = 309,980,457.32 : x
  2. Step 2: Convert to fraction form
    570,740,841.32/787,626,392.10 = 309,980,457.32/x
  3. Step 3: Cross multiply
    570,740,841.32x = 787,626,392.10 × 309,980,457.32
  4. Step 4: Simplify right side
    570,740,841.32x = 244,148,789,220,459,648
  5. Step 5: Solve for x
    x = 244,148,789,220,459,648/570,740,841.32
  6. Step 6: Final answer
    x = 427,775,220.46

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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.