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Finding the Fourth Proportional to 630,597.72, 870,224.88 and 404,243.28

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Solution

The fourth proportional to 630,597.72, 870,224.88 and 404,243.28 is: 557,855.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,597.72 : 870,224.88 = 404,243.28 : x
  2. Step 2: Convert to fraction form
    630,597.72/870,224.88 = 404,243.28/x
  3. Step 3: Cross multiply
    630,597.72x = 870,224.88 × 404,243.28
  4. Step 4: Simplify right side
    630,597.72x = 351,782,559,828.81
  5. Step 5: Solve for x
    x = 351,782,559,828.81/630,597.72
  6. Step 6: Final answer
    x = 557,855.74

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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.