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Finding the Fourth Proportional to 615,690.61, 849,644.74 and 343,762.67

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Solution

The fourth proportional to 615,690.61, 849,644.74 and 343,762.67 is: 474,387.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,690.61 : 849,644.74 = 343,762.67 : x
  2. Step 2: Convert to fraction form
    615,690.61/849,644.74 = 343,762.67/x
  3. Step 3: Cross multiply
    615,690.61x = 849,644.74 × 343,762.67
  4. Step 4: Simplify right side
    615,690.61x = 292,076,144,373.86
  5. Step 5: Solve for x
    x = 292,076,144,373.86/615,690.61
  6. Step 6: Final answer
    x = 474,387.85

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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.