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Finding the Fourth Proportional to 657,263.76, 907,066 and 370,679.28

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Solution

The fourth proportional to 657,263.76, 907,066 and 370,679.28 is: 511,561.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,263.76 : 907,066 = 370,679.28 : x
  2. Step 2: Convert to fraction form
    657,263.76/907,066 = 370,679.28/x
  3. Step 3: Cross multiply
    657,263.76x = 907,066 × 370,679.28
  4. Step 4: Simplify right side
    657,263.76x = 336,230,571,792.48
  5. Step 5: Solve for x
    x = 336,230,571,792.48/657,263.76
  6. Step 6: Final answer
    x = 511,561.10

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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.