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Finding the Fourth Proportional to 478,362, 660,139.56 and 263,501.40

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Solution

The fourth proportional to 478,362, 660,139.56 and 263,501.40 is: 363,631.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,362 : 660,139.56 = 263,501.40 : x
  2. Step 2: Convert to fraction form
    478,362/660,139.56 = 263,501.40/x
  3. Step 3: Cross multiply
    478,362x = 660,139.56 × 263,501.40
  4. Step 4: Simplify right side
    478,362x = 173,947,698,255.38
  5. Step 5: Solve for x
    x = 173,947,698,255.38/478,362
  6. Step 6: Final answer
    x = 363,631.93

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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.