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Finding the Fourth Proportional to 657,368.40, 907,165.96 and 355,562.48

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Solution

The fourth proportional to 657,368.40, 907,165.96 and 355,562.48 is: 490,674.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,368.40 : 907,165.96 = 355,562.48 : x
  2. Step 2: Convert to fraction form
    657,368.40/907,165.96 = 355,562.48/x
  3. Step 3: Cross multiply
    657,368.40x = 907,165.96 × 355,562.48
  4. Step 4: Simplify right side
    657,368.40x = 322,554,178,509.18
  5. Step 5: Solve for x
    x = 322,554,178,509.18/657,368.40
  6. Step 6: Final answer
    x = 490,674.91

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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.