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Finding the Fourth Proportional to 657,808.40, 907,775.64 and 356,002.40

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Solution

The fourth proportional to 657,808.40, 907,775.64 and 356,002.40 is: 491,283.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,808.40 : 907,775.64 = 356,002.40 : x
  2. Step 2: Convert to fraction form
    657,808.40/907,775.64 = 356,002.40/x
  3. Step 3: Cross multiply
    657,808.40x = 907,775.64 × 356,002.40
  4. Step 4: Simplify right side
    657,808.40x = 323,170,306,501.54
  5. Step 5: Solve for x
    x = 323,170,306,501.54/657,808.40
  6. Step 6: Final answer
    x = 491,283.34

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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.