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Finding the Fourth Proportional to 487,215.60, 730,823.40 and 277,263.60

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Solution

The fourth proportional to 487,215.60, 730,823.40 and 277,263.60 is: 415,895.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,215.60 : 730,823.40 = 277,263.60 : x
  2. Step 2: Convert to fraction form
    487,215.60/730,823.40 = 277,263.60/x
  3. Step 3: Cross multiply
    487,215.60x = 730,823.40 × 277,263.60
  4. Step 4: Simplify right side
    487,215.60x = 202,630,726,848.24
  5. Step 5: Solve for x
    x = 202,630,726,848.24/487,215.60
  6. Step 6: Final answer
    x = 415,895.40

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Similar ratio
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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.