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Finding the Fourth Proportional to 665,501.58, 918,390.15 and 363,695.58

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Solution

The fourth proportional to 665,501.58, 918,390.15 and 363,695.58 is: 501,898.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,501.58 : 918,390.15 = 363,695.58 : x
  2. Step 2: Convert to fraction form
    665,501.58/918,390.15 = 363,695.58/x
  3. Step 3: Cross multiply
    665,501.58x = 918,390.15 × 363,695.58
  4. Step 4: Simplify right side
    665,501.58x = 334,014,438,270.54
  5. Step 5: Solve for x
    x = 334,014,438,270.54/665,501.58
  6. Step 6: Final answer
    x = 501,898.79

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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.