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Finding the Fourth Proportional to 478,663.38, 660,528.54 and 263,802.78

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Solution

The fourth proportional to 478,663.38, 660,528.54 and 263,802.78 is: 364,033.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,663.38 : 660,528.54 = 263,802.78 : x
  2. Step 2: Convert to fraction form
    478,663.38/660,528.54 = 263,802.78/x
  3. Step 3: Cross multiply
    478,663.38x = 660,528.54 × 263,802.78
  4. Step 4: Simplify right side
    478,663.38x = 174,249,265,121.34
  5. Step 5: Solve for x
    x = 174,249,265,121.34/478,663.38
  6. Step 6: Final answer
    x = 364,033.00

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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.