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Finding the Fourth Proportional to 615,503.61, 849,391.75 and 357,444.02

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Solution

The fourth proportional to 615,503.61, 849,391.75 and 357,444.02 is: 493,270.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,503.61 : 849,391.75 = 357,444.02 : x
  2. Step 2: Convert to fraction form
    615,503.61/849,391.75 = 357,444.02/x
  3. Step 3: Cross multiply
    615,503.61x = 849,391.75 × 357,444.02
  4. Step 4: Simplify right side
    615,503.61x = 303,609,995,864.06
  5. Step 5: Solve for x
    x = 303,609,995,864.06/615,503.61
  6. Step 6: Final answer
    x = 493,270.86

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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.