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Finding the Fourth Proportional to 478,688.31, 660,590.79 and 260,899.41

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Solution

The fourth proportional to 478,688.31, 660,590.79 and 260,899.41 is: 360,041.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,688.31 : 660,590.79 = 260,899.41 : x
  2. Step 2: Convert to fraction form
    478,688.31/660,590.79 = 260,899.41/x
  3. Step 3: Cross multiply
    478,688.31x = 660,590.79 × 260,899.41
  4. Step 4: Simplify right side
    478,688.31x = 172,347,747,362.43
  5. Step 5: Solve for x
    x = 172,347,747,362.43/478,688.31
  6. Step 6: Final answer
    x = 360,041.69

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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.