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Finding the Fourth Proportional to 478,547.20, 660,424.56 and 263,687.22

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Solution

The fourth proportional to 478,547.20, 660,424.56 and 263,687.22 is: 363,904.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,547.20 : 660,424.56 = 263,687.22 : x
  2. Step 2: Convert to fraction form
    478,547.20/660,424.56 = 263,687.22/x
  3. Step 3: Cross multiply
    478,547.20x = 660,424.56 × 263,687.22
  4. Step 4: Simplify right side
    478,547.20x = 174,145,516,246.12
  5. Step 5: Solve for x
    x = 174,145,516,246.12/478,547.20
  6. Step 6: Final answer
    x = 363,904.58

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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.