Home / 312,130,418.60-430,739,827.85-186,682,612.34

Finding the Fourth Proportional to 312,130,418.60, 430,739,827.85 and 186,682,612.34

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Solution

The fourth proportional to 312,130,418.60, 430,739,827.85 and 186,682,612.34 is: 257,621,915.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,130,418.60 : 430,739,827.85 = 186,682,612.34 : x
  2. Step 2: Convert to fraction form
    312,130,418.60/430,739,827.85 = 186,682,612.34/x
  3. Step 3: Cross multiply
    312,130,418.60x = 430,739,827.85 × 186,682,612.34
  4. Step 4: Simplify right side
    312,130,418.60x = 80,411,636,301,919,888
  5. Step 5: Solve for x
    x = 80,411,636,301,919,888/312,130,418.60
  6. Step 6: Final answer
    x = 257,621,915.42

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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.