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Finding the Fourth Proportional to 660,243.87, 989,695.80 and 375,345.87

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Solution

The fourth proportional to 660,243.87, 989,695.80 and 375,345.87 is: 562,637.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,243.87 : 989,695.80 = 375,345.87 : x
  2. Step 2: Convert to fraction form
    660,243.87/989,695.80 = 375,345.87/x
  3. Step 3: Cross multiply
    660,243.87x = 989,695.80 × 375,345.87
  4. Step 4: Simplify right side
    660,243.87x = 371,478,231,086.35
  5. Step 5: Solve for x
    x = 371,478,231,086.35/660,243.87
  6. Step 6: Final answer
    x = 562,637.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.