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Finding the Fourth Proportional to 657,312.63, 907,091.49 and 355,506.63

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Solution

The fourth proportional to 657,312.63, 907,091.49 and 355,506.63 is: 490,599.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,312.63 : 907,091.49 = 355,506.63 : x
  2. Step 2: Convert to fraction form
    657,312.63/907,091.49 = 355,506.63/x
  3. Step 3: Cross multiply
    657,312.63x = 907,091.49 × 355,506.63
  4. Step 4: Simplify right side
    657,312.63x = 322,477,038,711.58
  5. Step 5: Solve for x
    x = 322,477,038,711.58/657,312.63
  6. Step 6: Final answer
    x = 490,599.18

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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.