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Finding the Fourth Proportional to 673,679.58, 929,457 and 480,117.78

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Solution

The fourth proportional to 673,679.58, 929,457 and 480,117.78 is: 662,405.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,679.58 : 929,457 = 480,117.78 : x
  2. Step 2: Convert to fraction form
    673,679.58/929,457 = 480,117.78/x
  3. Step 3: Cross multiply
    673,679.58x = 929,457 × 480,117.78
  4. Step 4: Simplify right side
    673,679.58x = 446,248,831,445.46
  5. Step 5: Solve for x
    x = 446,248,831,445.46/673,679.58
  6. Step 6: Final answer
    x = 662,405.16

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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.