Home / 639,795.54-959,690.55-260,631.72

Finding the Fourth Proportional to 639,795.54, 959,690.55 and 260,631.72

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Solution

The fourth proportional to 639,795.54, 959,690.55 and 260,631.72 is: 390,946.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,795.54 : 959,690.55 = 260,631.72 : x
  2. Step 2: Convert to fraction form
    639,795.54/959,690.55 = 260,631.72/x
  3. Step 3: Cross multiply
    639,795.54x = 959,690.55 × 260,631.72
  4. Step 4: Simplify right side
    639,795.54x = 250,125,798,714.25
  5. Step 5: Solve for x
    x = 250,125,798,714.25/639,795.54
  6. Step 6: Final answer
    x = 390,946.46

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1.5x scale

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.