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Finding the Fourth Proportional to 502,440.32, 692,674.80 and 400,810.72

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Solution

The fourth proportional to 502,440.32, 692,674.80 and 400,810.72 is: 552,566.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,440.32 : 692,674.80 = 400,810.72 : x
  2. Step 2: Convert to fraction form
    502,440.32/692,674.80 = 400,810.72/x
  3. Step 3: Cross multiply
    502,440.32x = 692,674.80 × 400,810.72
  4. Step 4: Simplify right side
    502,440.32x = 277,631,485,313.86
  5. Step 5: Solve for x
    x = 277,631,485,313.86/502,440.32
  6. Step 6: Final answer
    x = 552,566.09

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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.