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Finding the Fourth Proportional to 673,292.96, 929,189.81 and 386,927.20

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Solution

The fourth proportional to 673,292.96, 929,189.81 and 386,927.20 is: 533,985.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,292.96 : 929,189.81 = 386,927.20 : x
  2. Step 2: Convert to fraction form
    673,292.96/929,189.81 = 386,927.20/x
  3. Step 3: Cross multiply
    673,292.96x = 929,189.81 × 386,927.20
  4. Step 4: Simplify right side
    673,292.96x = 359,528,811,451.83
  5. Step 5: Solve for x
    x = 359,528,811,451.83/673,292.96
  6. Step 6: Final answer
    x = 533,985.70

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Double scale
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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.