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Finding the Fourth Proportional to 611,327.94, 915,798.98 and 400,326.18

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Solution

The fourth proportional to 611,327.94, 915,798.98 and 400,326.18 is: 599,708.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,327.94 : 915,798.98 = 400,326.18 : x
  2. Step 2: Convert to fraction form
    611,327.94/915,798.98 = 400,326.18/x
  3. Step 3: Cross multiply
    611,327.94x = 915,798.98 × 400,326.18
  4. Step 4: Simplify right side
    611,327.94x = 366,618,307,311.30
  5. Step 5: Solve for x
    x = 366,618,307,311.30/611,327.94
  6. Step 6: Final answer
    x = 599,708.08

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1.5x scale

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.