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Finding the Fourth Proportional to 487,623.30, 730,009.35 and 347,655.30

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Solution

The fourth proportional to 487,623.30, 730,009.35 and 347,655.30 is: 520,466.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,623.30 : 730,009.35 = 347,655.30 : x
  2. Step 2: Convert to fraction form
    487,623.30/730,009.35 = 347,655.30/x
  3. Step 3: Cross multiply
    487,623.30x = 730,009.35 × 347,655.30
  4. Step 4: Simplify right side
    487,623.30x = 253,791,619,577.06
  5. Step 5: Solve for x
    x = 253,791,619,577.06/487,623.30
  6. Step 6: Final answer
    x = 520,466.56

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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.