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Finding the Fourth Proportional to 522,009.21, 720,423.27 and 292,605.47

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Solution

The fourth proportional to 522,009.21, 720,423.27 and 292,605.47 is: 403,823.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,009.21 : 720,423.27 = 292,605.47 : x
  2. Step 2: Convert to fraction form
    522,009.21/720,423.27 = 292,605.47/x
  3. Step 3: Cross multiply
    522,009.21x = 720,423.27 × 292,605.47
  4. Step 4: Simplify right side
    522,009.21x = 210,799,785,915.17
  5. Step 5: Solve for x
    x = 210,799,785,915.17/522,009.21
  6. Step 6: Final answer
    x = 403,823.88

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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.