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Finding the Fourth Proportional to 624,642.20, 937,400.70 and 400,547.60

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Solution

The fourth proportional to 624,642.20, 937,400.70 and 400,547.60 is: 601,101.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,642.20 : 937,400.70 = 400,547.60 : x
  2. Step 2: Convert to fraction form
    624,642.20/937,400.70 = 400,547.60/x
  3. Step 3: Cross multiply
    624,642.20x = 937,400.70 × 400,547.60
  4. Step 4: Simplify right side
    624,642.20x = 375,473,600,623.32
  5. Step 5: Solve for x
    x = 375,473,600,623.32/624,642.20
  6. Step 6: Final answer
    x = 601,101.88

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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.